Robust. Reliable. Ready-to-use.
Femtosecond fiber lasers

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

Precision in photonics
Together we shape a sustainable future.
As the world’s first commercial supplier of optical frequency
combs, Menlo Systems has been leveraging innovation inlaser technology for over 20 years. As a result, today weoffer a portfolio of femtosecond fiber lasers based on our
proprietary figure 9 ® mode locking technology1,2 - uniting
scientific precision with industrial robustness.
At the core of figure 9 ® is an all polarization-maintaining
fiber design, efficiently decoupling the laser cavity fromperturbations such as vibrations and temperaturefluctuations.
The technology contains no critical or lifetime limiting
components, such as degradable optics. Whether designed
to serve science or industry, our femtosecond fiber lasers
exhibit exceptional performance:▪ Robust. A single well-defined mode-locked state
guarantees robust self-start and mode-locked operation
within seconds – even in the harshest environments.

▪ Reliable. Reproducible laser performance you can relyon, even after thousands of on/off cycles, with excellent
power stability, pulse-to-pulse repeatability, andunsurpassed low-noise performance.

▪ Ready-to-use.

After installation, our lasers aremaintenance free, thermally managed without any
external cooling, and turn-key operated.

1 Patents EP 2637265 A1 / CN 103311780 A / US 8873601 B2
2 W. Hänsel et. al., Appl. Phys. B (2017) 123:41

2

Dr. Michael Mei (left) and Dr. Ronald Holzwarth (right)
Managing directors and co-founders of Menlo Systems

Nobel Prize Laureate Prof. Theodor Hänsch
Pioneer of optical frequency comb technology
Co-founder of Menlo Systems

WWW.MENLOSYSTEMS.COM | 2024.5

Femtosecond fiber lasers: Serving science and industry

Ready for integration
INDUSTRIAL SERIES

Ready for synchronization
SCIENTIFIC SERIES▪ Ultra-compact designs with factory-set repetition rates▪ Optional intracavity actuators for repetition rate tuning,▪ Excellent cost-performance ratio and low cost ofsynchronization, and carrier envelope phase (CEP)
stabilization at exceptionally low intrinsic phase noiseownership through use of standard telecom components
and Telcordia-qualified pump diodes – all ready for 24/7
operation▪ Complete synchronization solutions with timing jitter on▪ Fast and easy OEM integration via a modular concept▪ Asynchronous Optical Sampling (ASOPS), also withmulti-color lasers

and fiber-coupled interconnects▪ Quickly

100▪ Optional frequency conversion and supercontinuum

OrangeYLMO

generation modules

C-FiberELMO
SCG IRSCGVISSCG IR

10500

YLMO mid-IR

SCG VISYLMO 930

Orange 520
YLMO 520

Output Power * [mW]1000

C-Fiber 780
ELMO 780

adaptable options like dispersion precompensation, multiple amplifier seeding, pulse picking,and fast amplitude modulation

10000

the attosecond level

1000

1500

2000

3000

4000

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIER

Robust. Reliable. Ready-to-use.

5000

Wavelength [nm]* Optical spectra scaled to maximum average power

2024.5 | WWW.MENLOSYSTEMS.COM

3

From cutting-edge research to industrial innovation
Courtesy Vanguard Automation

3D nanoprinting
The nanoscale variant of additive manufacturing employs
femtosecond laser pulses to engineer almost arbitrary 3D
structures via multi-photon absorption in photosensitive
materials.
Menlo Systems’ femtosecond fiber lasers lead withexcellent beam quality and pointing stability, integrated
modulation and pulse pre-compression options, and pulseto-pulse repeatability and reliability.
3D nanoprinted structures (in blue) - so-called Photonic Wire Bonds - guiding
light in photonic integrated circuits. They provide high coupling efficiencies using
tapered structures for mode-matching. Employed laser: Industrial Series.

Courtesy das-Nano

Terahertz generation
Electromagnetic radiation in the range of several hundredsof micrometers opens new horizons in fields spanningmaterial sciences, quality control, and non-destructive
testing.
Menlo Systems has a proven track record of serving
leading OEM integrators with customized, industry-gradelaser system designs, and continues to leverage thisexperience by developing turn-key THz solutions in-house.
Optical fibers inside the supply hose of a robotic arm supplying femtosecond
laser pulses for THz-based paint layer thickness measurements. Approximately
30,000 car bodies per year can be inspected. Employed laser: ELMO Series.

Amplifier seeding

Courtesy Laboratory of Attosecond Physics

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

Application spotlights

Inspection of a Watt-level ultrafast mid-infrared source, seeded by a frequencyshifted Erbium-based femtosecond fiber laser. The spectral coverage extends
over the molecular fingerprint region. Employed seed laser: C-Fiber Series.

4

The generation of ultra-intense laser pulses not only
pushes boundaries in fundamental physics, but also
increasingly finds its way into industrial applications, likematerial processing.
Our femtosecond fiber laser portfolio aligns to everdemanding seed laser requirements - with customizable
repetition rates, spectral bandwidths and pulse durations,as well as a wide range of options for synchronization andcarrier-envelope-phase (CEP) stabilization.

WWW.MENLOSYSTEMS.COM | 2024.5

From cutting-edge research to industrial innovation
Microscopy and life sciences
Continuously refined multiphoton imaging methodologies
provide impressive insight into complex and dynamic
biological processes, with ever-increasing resolution andtissue penetration depths.
Our truly worry-free laser light sources provide users withthe peace of mind to focus on their imaging applications.
Installation is as easy as it gets: It takes just a few minutes
to operate our compact and maintenance-free lasers at thepush of a button.

Two-Photon microscopy images of a YFP-labled mouse brain, captured by aThorlabs Cerna microscope. Employed laser: YLMO Series.

Ultrafast spectroscopy
Sequences of ultrashort pulses examine dynamics ofcharge carriers, atoms, or inter- and intra-molecular
processes with unprecedented time-resolution.
We continue to enhance the experimentalist’s toolbox bysteadily expanding the wavelength coverage of our
femtosecond fiber laser portfolio – along withcustomizations like multi-color outputs, supercontinuum
generation, or turn-key synchronization solutions.
Supercontinuum generation (SCG) undergoing tests in an in-house R&D set-up.
Employed laser: Orange Series.

Ready to fly
Over the years, Menlo Systems’ femtosecond fiber lasers
were released in drop towers, used in airborne missions,tested in parabolic flights, and have travelled on suborbital
rocket missions. Now, an ongoing research project will
result in a figure 9 ® mode-locked frequency comb installedon the International Space Station.
Whatever the application, our technology can fly – almost
everywhere.

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIER

Application spotlights

The world‘s first airborne frequency comb on a mission to enable a LIDAR-based
greenhouse gas monitoring campaign – employing figure 9 ® technology.

2024.5 | WWW.MENLOSYSTEMS.COM

5

Delivering 24/7 across all industries
KEY FEATURES▪ Output power > 330 mW at 1560 nm▪ Pulse width < 60 fs▪ Repetition rate customizable in the range 50-100 MHz▪ Extremely robust, all-fiber design▪ Ultra-compact▪ Fast and easy integration via its modular concept

Here comes a true workhorse: ELMO is a robust and costeffective solution engineered for 24/7 operation - ultracompact and ready for OEM integration. With an all-fiber
design and without any moving parts, it delivers
dependable operation even in the harshest environments,
with excellent pulse-to-pulse reliability and power stability.

Autocorrelation

-15

-20
-25
1450

1550
Wavelength [nm]6

Pulse width
44 fs(Gaussian fit)

4
2

25

15
5
Time [h]

10

15

1

0,5

0
1

5
2
9998 9999 10000
On/Off Turns

30 40
Time [h]

50

60

1,005

20

1

10

0,995

0

0,99

-10

x

0,985
0

20

Shock Testing

Output Power [norm.]

35

0,5

Temperature [°C]45

Output Power [norm.]

55

10

0

Reliability Testing15< 0.5% rms over 24h

100-600 -400 -200 0 200 400 600
Time [fs]Temperature Cycling

0

200

0

0

1650

300

0

y

z
10

Acceleration [g]-10Output Power [mW]0-5Output Power Stability

400

8Signal [a.u.]

Norm. Intensity [dB]

Optical Spectrum

06

The ELMO series is a highly-flexible design concept, basedon fiber-coupled oscillator (ELMO), fiber-coupled amplifier(ELMO HP), and free-space output compressor (ELMO
HP-FS) modules. Fiber-based interconnects between
different modules enable fast and easy adaptation toapplications requiring multiple output ports, or seeding ofmultiple amplifiers.

PERFORMANCE DATA

Output Power [norm.]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

ELMO

-20
20

30

Time [s]WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules *ELMOoscillator

ELMO HP

ELMO HIGH HP-FS

oscillator, amplifier

oscillator, amplifier,free-space compressor

OUTPUT CHARACTERISTICS
Center Wavelength
Average Power
Pulse Width
Repetition Rate
Output Port
Output Fiber Length
Polarization

1560 nm +/- 30 nm> 10 mW> 180 mW
< 150 fs (typ. 100 fs)< 60 fs (typ. 45 fs)
100 MHzfiber-coupled (PM fiber, FC/APC connector)
0.5 m
linear> 330 mW
< 90 fs (typ. 70 fs)
free-spacen.a.
linear, p-polarized **OPTIONS ***Output Fiber Length
Repetition Rate
Pulse Picking
Multiple Output Ports
Supercontinuum Extension

0.5-50 m
n.a.
factory-set value in the range 50-100 MHz
down to kHz range
please inquire for additional oscillator/amplifier output ports
please inquire
NIR [1050 - 2100 nm]

REQUIREMENTS
Warm-Up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication Options< 60 s
15 °C - 35 °C
12 VDC (external power supply for 100/115/230 VAC included)
10 W
20 W
software/USB, CAN-BUS, handheld remote unit

DIMENSIONS
Laser Head Dimensions / Weight
Compressor Dimensions / Weight

195 x 95 x 28 mm³ / 0.7 kg
n.a.

195 x 95 x 75 mm³ / 2.5 kg
n.a.

195 x 95 x 75 mm³ / 2.5 kg
182 x 95 x 32 mm³ / 1.0 kg* Fiber-based interconnects between all modules, standard patch cord length: 0.5 m** In standard mounting configuration, free-space compressor module can be mounted in arbitrary orientation*** Please inquire for specific combinations of output fiber length, pulse width, repetition rate, average power, and number of oscillator/amplifier module output ports

TECHNICAL DRAWINGSOVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSELMO HP
All dimensions in mm

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7

Industry proven. Frequency doubled.
KEY FEATURES▪ Output power > 140 mW at 780 nm▪ Pulse width < 60 fs at 780 nm▪ Optional pulse compression and dispersion
pre-compensation accessory▪ Repetition rate customizable in the range 50-100 MHz▪ Simple switching between 780 nm and 1560 nm output
via detachable SHG unit

The frequency-doubled extension of our industry-proven
ELMO series: ELMO 780 advances robustness andreliability of a 1560 nm based design concept to cover the
780 nm wavelength range. Pulses widths < 60 fs at the
sample can be achieved with the optional pulse
compression and dispersion pre-compensation accessory.

Output Power Stability 780 nm

Autocorrelation 780 nm

0

1

0,5

Pulse width
85 fs(Gaussian fit)

< 0.5% rms over 24h

80
40
0

-600 -400 -200 0 200 400 600
Time [fs]Optical Spectrum 1560 nm

Autocorrelation 1560 nm

Signal [a.u.]

-5
-10
-15
-20

6
4

Pulse width
44 fs(Gaussian fit)

2
0

1650

8

12 16
Time [h]

20

24

200

-600 -400 -200 0 200 400 600
Time [fs]Output Power [mW]04Temperature Cycling 780 nm

81550
Wavelength [nm]

120

0

0

750 760 770 780 790 800 810
Wavelength [nm]

160

40

160
30

120
80

20

40
0

Temperature [°C]

0,5

200

Output Power [mW]1

Normalized Intensity

Normalized Intensity

Optical Spectrum 780 nm

-25
1450

8

The ELMO 780 series is based on a fiber-coupled 1560 nm
laser head (ELMO HP) and a fiber-connected handheld
SHG module delivering 780 nm output – a concept thateliminates heat dissipation into optical set-ups. By simply
replacing the SHG module with a fiber patch cord, thefundamental 1560 nm output is also readily available.

PERFORMANCE DATA

Norm. Intensity [dB]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWELMO 780

10

0

5

10
Time [h]1520

WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules *ELMO 780

ELMO 780 HP

oscillator, amplifier, SHG (detachable)

OUTPUT CHARACTERISTICS 780 nm **Center Wavelength
Average Power
Pulse Width
Repetition Rate
Output Port
Beam Quality
Polarization

780 +/- 10 nm> 75 mW (typ. 85 mW)> 140 mW (typ. 165 mW)< 100 fs (typ. 85 fs, compressible to <60 fs with optional accessory)
100 MHzfree space
M² < 1.2 (typ. < 1.1)
linear, p-polarized ***OUTPUT CHARACTERISTICS 1560 nm **Center Wavelength
Average Power
Pulse Width
Repetition Rate
Output Port
Output Fiber Length
Polarization

1560 +/- 30 nm> 180 mW (typ. 210 mW)< 70 fs (typ. < 50 fs)
100 MHzfiber-coupled (PM fiber, FC/APC connector)< 0.8 mlinearOPTIONS ****
Dispersion Precompensation
Repetition Rate
Multiple Output Ports

up to -16000 fs² (for 780 nm output)
factory-set value in the range 50-100 MHz
please inquire for additional oscillator/amplifier output ports

REQUIREMENTS
Warm-Up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication Options< 60 s
15 °C - 35 °C
12 VDC (external power supply for 100/115/230 VAC included)
20 W
software/USB, CAN-BUS, handheld remote unit

DIMENSIONS
Laser Head Dimensions / Weight
SHG Module Dimensions / Weight

195 x 95 x 75 mm³ / 2.9 kg
195 x 47 x 28 mm³ / 0.5 kg
185 x 95 x 32 mm³ / 1.0 kg* Fiber-based interconnects between all modules, standard patch cord length: 0.5 m** 780 nm: with SHG module attached, 1560 nm: with SHG module detached and replaced by PM fiber patch cord (included)*** In standard mounting configuration, SHG module can be mounted in arbitrary orientation**** Please inquire for specific combinations of pulse width, repetition rate, and average power

2024.5 | WWW.MENLOSYSTEMS.COM

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONS

9

Industry proven. Output power multiplied.
KEY FEATURES▪ Output power > 1 W at 780 nm▪ Output power > 3 W at 1560 nm▪ Integrated fast amplitude modulation▪ Integrated dispersion precompensation
up to -30.000 fs²▪ Additional output ports optionally available

The most recent high power extensions of our industryproven ELMO series: ELMO 780 XHP delivers up to 1.5 W
of average output power at 780 nm, with pulse durations
down to 100 fs. Fully integrated fast amplitude modulationand dispersion precompensation make it a perfect fit for
multi-photon applications in microscopy or 3D nanoprinting.

For covering applications specifically at the 1560 nm fundamental, version ELMO XHP delivers up to 3 W of average
output power and pulse durations down to 250 fs.
The ELMO XHP series comes in an extremely compact
design, requiring just a fraction of space occupied by otherlasers with comparable performance.

PERFORMANCE DATA
Optical Spectrum 780 nm

Autocorrelation 780 nm
Pulse width
105 fs(sech² fit)

4
2
0

0
760

770
780
790
Wavelength [nm]< 0.5% rms over 100h
0,50,0Beam Quality

020

Fast Amplitude Modulation

Output Power [norm.]

Amplitude [Norm.]

0,8rise / fall time
typically 180 ns

0,6

40
60
Time [h]80100Reliability Testing

0,4
0,2

1

0,5

0

0,0
M² typically 1.1

1,0-600 -400 -200 0 200 400 600
Time [fs]

800

1,0

10

Output Power [W]0,56Output Power Stability 780 nm

1,5

8

1

Signal [a.u.]

Normalized Intensity

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWELMO XHP Series

0

100

200
300
Time [ns]

400

0

1

5
2
9998 9999 10000
On/Off Turns

WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules *ELMO XHPELMO 780 XHP

19“ control unit, compact laser head

OUTPUT CHARACTERISTICS
Center Wavelength
Average Power
Pulse Width
Repetition Rate
Output Port
Beam Quality
Polarization
Dispersion Precompensation
Fast Amplitude Modulation **1560 +/- 20 nm>3W< 300 fs (typ. 250 fs)
100 MHz +/-1MHz
free space
M² < 1.2
linear, s-polarized
n.a.
n.a.

780 +/- 10 nm> 1 W (typ. 1.2 W)< 150 fs (typ.120 fs)
100 MHz +/-1MHz
free space
M² < 1.2
linear, s-polarized
up to -30.000 fs²
integrated AOM for fast light modulation

OPTIONS
1560 nm Output Port
Multiple Output Ports

please inquire for additional output ports
free space, > 1 W
please inquire for additional oscillator/amplifier output ports

REQUIREMENTS< 60 s
15 °C – 35 °C
0°C – 50 °C
100/115/230 VAC< 150 W
software/USB

Warm-Up TimeOperating Temperature
Storage Temperature
Operating Voltage
Power Consumption
Communication Options

DIMENSIONS
Laser Head Dimensions / WeightController Dimensions / Weight
Mounting

240 x 170 x 65.5 mm³ / < 5 kg19”, 2 HU (449 x 496 x 96 mm³) / < 20 kg
detachable 12.5 mm posts and post clamps (included)* Control unit and laser head permanently interconnected by umbilical cord** Analog input 0-5 V, rise-/fall-time < 300 ns (typ. 180 ns)

TECHNICAL DRAWINGSOVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSELMO 780 XHPAll dimensions in mm

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11

Multi-photons in mind
KEY FEATURES▪ Output power > 4 W at 1040 nm▪ Output power > 500 mW at 930 nm▪ Fully adjustable dispersion pre-compensation▪ Fast amplitude modulation option▪ Highest multi-photon signals from sensitive samples via low
repetition rates and high pulse energies▪ Compact design, easy installation, maintenance-free operation

State-of-the-art femtosecond fiber laser technology has
evolved into easy-to-use products: YLMO and YLMO 930
incorporate Menlo Systems’ proprietary figure 9®
technology to bring excellent stability and consistent longterm performance to the life sciences and multi-photon
applications. Featuring fully adjustable dispersion precompensation and optional fast amplitude modulation.

-10
-15
-20

6

Pulse width
69 fs(Gaussian fit)

4
2
0

-25
990

YLMO 930 Optical Spectrum

YLMO 930 Autocorrelation
8

Signal [a.u.]

0
-5
-10
-15
-20
-25
-30

6

4
3
2
1
0

-600 -400 -200 0 200 400 600
Tiime [fs]1010 1030 1050 1070 1090
Wavelength [nm]5Output Power [W]0-5

YLMO Output Power Stability

YLMO Autocorrelation
8

Signal [a.u.]

Norm. Intensity [dB]

YLMO Optical Spectrum

0

8

16

24 32
Time [h]4048

Beam Quality

Pulse width
132 fs(Gaussian fit)

4

2
0

905

12

Installation is as easy as it gets – the compact lasers canbe operated in just a few minutes with the push of a button.
Operation is maintenance free and does not require any
external cooling.
In short: Worry-free devices ready to serve all those whowant to focus solely on their application.

PERFORMANCE DATA

Norm. Intensity [dB]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWYLMO and YLMO 930

915
925
935
Wavelength [nm]945-600 -400 -200 0 200 400 600
Tiime [fs]M² typically 1.1

WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules *YLMOYLMO 930

19“ control unit, compact laser head

OUTPUT CHARACTERISTICS
Center Wavelength
Average Power
Pulse Energy
Pulse Width
Bandwidth
Repetition Rate
Output Port
Beam Quality
Polarization
Beam Diameter
Beam Divergence
Dispersion Precompensation

1045 nm +/- 10 nm>4W> 40 nJ< 80 fs (typ. 70 fs)> 30 nm
100 MHz930 nm +/- 10 nm> 500 mW
> 10 nJ< 140 fs (typ. 130 fs)> 20 nm
50 MHzfree space
M2 < 1.2 (typ. 1.1)

linear, p-pol (> 100:1)

linear, p-pol (> 50:1)
2.0 mm +/- 0.5 mm< 2 mrad0 fs2 to -30.000 fs2

0 fs2 to -60.000 fs2

OPTIONS
Repetition Rate
Fast Amplitude Modulation **factory-set value in the range 80-100 MHz
n.a.
integrated AOM for fast amplitude control

REQUIREMENTS< 60 s
15 °C - 30 °C
110 / 115 / 230 VAC, 50 to 60 Hz
200 W
software/USB

Warm-up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication

DIMENSIONS
Laser Head Dimensions / WeightControl Unit Dimensions / Weight
Umbilical Cord Length ***Mounting

265 x 110 x 76 mm³ / < 5 kg
19“, 2 HU (449 x 496 x 96 mm³) / < 20 kg
2m
detachable 25 mm posts and post clamps (included)* Control unit and laser head permanently interconnected by umbilical cord** Analog or digital input, rise time <1 µs*** Custom umbilical cord lengths available on request

TECHNICAL DRAWINGSOVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSYLMO / YLMO 930 laser headAll dimensions in mm

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13

Two wavelengths, one choice
KEY FEATURES▪ 520 nm and 1040 nm dual output▪ Output power > 0.5 W at 520 nm (pulse width < 150 fs)▪ Output power > 4 W at 1040 nm (pulse width < 100 fs)▪ Arbitrary power splitting ratio▪ Highly compact design▪ Fast amplitude modulation option

Frequency doubling meets versatility: YLMO 520, thefrequency doubled extension of our YLMO series, delivers> 0.5 W of average output power at 520 nm, with pulse
durations below 150 fs. Its design permits simultaneousaccess to the 1040 nm fundamental with an arbitrary power
splitting ratio.

0,5

0

1

0,5

-600 -400 -200 0 200 400 600
Time [fs]Optical Spectrum 1040 nm

Autocorrelation 1040 nm
80Signal [a.u.]

-5
-15
-20

6

800
600
400
200
0

0

510 515 520 525 530 535 540
Wavelength [nm]-10

Pulse width
132 fs(Gaussian fit)

Output Power Stability 520 nm
1000

Output Power [mW]1

Autocorrelation 520 nm

Normalized Intensity

Normalized Intensity

Optical Spectrum 520 nm

0

20

40
60
Time [h]80100Beam Quality

Pulse width
69 fs(Gaussian fit)

4
2
0

-25
990

14

YLMO 520 comes in a highly compact design – with fast
amplitude modulation optionally integrated.
High peak powers, excellent stability, and consistent longterm performance make YLMO 520 a perfect fit for
applications such as multi-photon excitation, pump-probe
spectroscopy, or two-photon polymerization.

PERFORMANCE DATA

Norm. Intensity [dB]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWYLMO 520

1010 1030 1050 1070 1090
Wavelength [nm]-600 -400 -200 0 200 400 600
Time [fs]M² typically 1.1

WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules *YLMO 520

19“ control unit, compact laser head

OUTPUT CHARACTERISTICS

520 nm Output Port

1040 nm Output Port

Center Wavelength
Average Power **Pulse Energy
Pulse Width
Bandwidth
Repetition Rate
Output Port
Beam Quality
Polarization
Beam Diameter
Beam Divergence

520 nm +/- 5 nm
> 0.5 W> 5 nJ< 150 fs
> 5 nm1045 nm +/- 10 nm>4W> 40 nJ< 100 fs
> 30 nm
100 MHzfree space
M2 < 1.2 (typically 1.1)

linear, s-pol

linear, p-pol
2.0 mm +/- 0.5 mm< 2 mradOPTIONS
Fast Amplitude Modulation ***integrated AOM for fast amplitude control

REQUIREMENTS
Warm-up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication< 60 s
15 °C - 30 °C
100-120 V (50/60Hz), 200-240 V (50/60Hz)
200 W
software/USB

DIMENSIONS
Laser Head Dimensions / WeightControl Unit Dimensions / Weight
Umbilical Cord Length ****

265 x 220 x 113 mm³ / < 10 kg
19“, 2 HU (449 x 496 x 96 mm³) / < 20 kg
2m* Control unit and laser head permanently interconnected by umbilical cord** User can switch between 520 nm and 1040 nm output port, arbitrary power splitting ratios possible*** Analog or digital input, rise time <1 µs**** Custom umbilical cord lengths available on request

TECHNICAL DRAWINGSOVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSYLMO 520 laser headAll dimensions in mm

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15

Unique solution for unique fingerprints
KEY FEATURES▪ Tunable output wavelength 3 - 5 µm
▪ Typical output power > 100 mW▪ Typical pulse width < 200 fs▪ Large spectral bandwidth up to 300 cm-1
▪ Highly compact design▪ Optional repetition rate stabilization for mid-IR
frequency comb generation

Powerful, tunable, compact: YLMO Mid-IR delivers
femtosecond pulses in the mid-IR with typical output
powers > 100 mW, tunable across the 3-5 µm wavelength
range.
Pulse widths < 200 fs align to applications in both thefrequency and time domain. A compact design ensureshigh stability without the need for realignment.

Spectral Tunablity

Optical Spectrum 3.85 µm

Normalized Intensity

1

0,5

0
2,5

3,5
4
4,5
Wavelength [µm]

0,5

0
3,4

5

3,6

3,8
4,0
Wavelength [µm]4,2Autocorrelation 3.85 µm

200Normalized Intensity

Output Power [mW]31

Output Power Stability 3.85 µm

240
160
120
80
40
0

1,0

Pulse width
94 fs(Gaussian fit)

0,5

0,0
0

16

YLMO Mid-IR delivers carrier-envelope-offset-free pulse
trains, suitable for mid-IR frequency comb generation via
optional stabilization of the repetition rate.
No matter the mid-IR spectroscopy to be carried out,
YLMO Mid-IR is a convenient, cost-effective, and highbrilliance mid-IR source that can be installed within a few
minutes.

PERFORMANCE DATA
Normalized Intensity

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWYLMO Mid-IR246Time [h]

8

10

12

-600

-400

-200

0
200
Time [fs]

400

600

WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules *YLMO Mid-IR

19“ control unit, compact laser head

OUTPUT CHARACTERISTICS
Center Wavelength
Average Power **Pulse Energy **Pulse Width **Bandwidth
Repetition Rate **Output Port
Polarisation3 – 5 µm (tunable)> 100 mW in the range 3.0 - 4.7 µm, > 80 mW in the range 4.7 - 5.0 µm> 1 nJ in the range 3.0 - 4.7 µm, > 0.8 nJ in the range 4.7 - 5.0 µm< 400 fs (typ. 200 fs)
up to 300 cm-1
100 MHzfree space
linear, s-polarized

OPTIONS
Center Wavelength
Repetition Rate
Output Port

fixed wavelength on request
stabilized (for mid-IR frequency comb generation)
fiber-coupled

REQUIREMENTS
Warm-up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication< 60s
15 °C - 30 °C
100-120 V (50/60 Hz), 220-240 V (50/60 Hz)
200 W
software/USB

DIMENSIONS
Laser Head Dimensions / WeightControl Unit Dimensions / Weight
Umbilical Cord Length ***340 x 290 x 90 mm³, < 10 kg
19“, 2 HU (449 x 496 x 96 mm³) / < 20 kg
2m* Control unit and laser head permanently interconnected by umbilical cord** Please inquire for specific combinations of average power, pulse width, and repetition rate*** Custom umbilical cord lengths available on request

TECHNICAL DRAWINGSOVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSYLMO Mid-IR laser headAll dimensions in mm

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17

Straightforward amplifier seeding
KEY FEATURES▪ Center wavelength 1030 - 1064 nm▪ Output power > 200 mW▪ Repetition rate 30 - 100 MHz▪ > 15 nm bandwidth, supporting < 150 fs pulse
widths▪ Highly customizable▪ Easy to integrate

Simply made for seeding laser amplifiers: YLMO-Seedcombines all the benefits of Menlo Systems’ figure 9 ®
mode locking technology into a highly-customizable seed
source. An all polarization-maintaining (PM) fiber design
with a single mode-locked state ensures reliable andconsistent mode locking, low amplitude and phase noise,and excellent long term stability.

Optical Spectrum 1030 nm

Normalized Intensity

Normalized Intensity

Optical Spectrum 1064 nm
1

0,5

0
1050

1055

1060 1065 1070
Wavelength [nm]

1075

1

0,5

0
1010

1080

Output Power Stability

1020

1030
1040
Wavelength [nm]1050

Autocorrelation (calculated)
8

200

6

Signal [a.u.]

250

150
100
50

4
2

0

0
0

18

The YLMO-Seed will readily align to even the mostchallenging applications via a customizable center
wavelength, spectral bandwidth, repetition rate,
configuration of output ports, length and type of output
fiber, and optional fast amplitude modulation.
In short: An amplifier seed source as flexible as it is easy tointegrate.

PERFORMANCE DATA

Output Power [mW]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWYLMO-Seed

20

40
60
Time [h]

80

100

-600

-400

-200

0
200
Time [fs]

400

600

WWW.MENLOSYSTEMS.COM | 2024.5

ModelContained Modules

YLMO-Seed

19“ control unit

OUTPUT CHARACTERISTICS *Center Wavelength
Average Power
Pulse Energy
Pulse Width
Bandwidth (3dB)
Repetition Rate
Output Port
Polarization

factory set between 1030 nm and 1064 nm, +/- 1 nm
> 200 mW (@ 50 MHz)> 4 nJ (@ 50 MHz)chirped> 15 nm (supporting < 150 fs)
50 MHzfiber coupled (PM fiber, SC/APC mating sleeve)linear (> 100:1)

OPTIONS
Bandwidth
Repetition Rate
Multiple Output Ports
Output Port
Fast Amplitude Modulation **customized narrow spectral bandwidth
factory-set value in the range 30-100 MHz
customized additional output ports for seeding multiple ampliers
customized length and type of output fiber
integrated AOM for fast amplitude control

REQUIREMENTS< 60 s
15 °C - 35 °C
110 / 115 / 230 VAC, 50 to 60 Hz
120 W
software/USB

Warm-up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication

DIMENSIONS
19“ x 2 HU x 495 mm / 15 kg

Laser Unit Dimensions / Weight* Please inquire for specific combinations of center wavelength, average power, bandwidth, and repetition rate** Analog or digital input, rise time <1 µs

TECHNICAL DRAWINGSOVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSYLMO Seed
All dimensions in mm

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19

Flagship laser full of options
KEY FEATURES▪ Output power > 500 mW at 1560 nm▪ Pulse width < 90 fs▪ Lowest pulse-to-pulse timing jitter▪ Optional intra-cavity actuators for repetition rate tuning▪ Repetition rate stabilization, locking, and synchronization
via repetition rate locking electronics (RRE Synchro)▪ Optional multiple output ports, second harmonic andsupercontinuum generation
The flagship of our scientific laser series: C-Fiber comeswith a whole range of options to cover the application inmind – ranging from customized repetition rates, intracavity
actuators for repetition rate stabilization andsynchronization, multiple output ports, to modules forfrequency conversion like second harmonic orsupercontinuum generation.

Optical Spectrum

Autocorrelation
8

Signal [a.u.]

0
-5
-10
-15
-20
-25
-30
1450

1550
1600
Wavelength [nm]Pulse width
65 fs(Gaussian fit)

4
2
-600

1650

-400

-200

0
200
Time [fs]

200
0
8

16

24
Time [h]

32

600

40

Integrated Timing Jitter [fs]

SSB Phase Noise [dBc/Hz]

400

0

400

Integrated Timing Jitter (free running)

Output Power Stability

Output Power [mW]

6

0
1500

600

20

The C-Fiber series is based on a fully PM fiber design anduses active temperature stabilization to provide lowest
pulse-to-pulse timing jitter, low amplitude and phase noise,and excellent long-term stability.
No matter the configuration, all systems can be user
installed within minutes, are ready to use at the push of abutton, and are entirely maintenance free.

PERFORMANCE DATA
Norm. Intensity [dB]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

C-Fiber48

Frequency [Hz]WWW.MENLOSYSTEMS.COM | 2024.5

Model

C-Fiber

C-Fiber HP

OUTPUT CHARACTERISTICS
1560 +/- 20 nm

Center Wavelength
Average Power
Pulse Energy
Pulse Width
Repetition Rate
Repetition Rate Stability
Timing Jitter
Output Port
Polarization
Additional Seed Port

> 100 mW
> 1 nJ> 500 mW
> 5 nJ< 90 fs
100 MHz< 1 ppm over 20 hours (free running)< 2 fs rms [10kHz -1MHz] (free running)fiber coupled (FC/APC)
free space
linear, PM fiber
linear, s-pol
one additional seed port

OPTIONS
factory-set value in the range 50-250 MHz
optional intra-cavity actuators for repetition rate tuning

Repetition Rate
Repetition Rate Tuning
Repetition Rate Stabilization,
Locking, and Synchronization *Multiple Output Ports
Supercontinuum Extension

optional repetition rate locking electronics (RRE Synchro)additional output ports for seeding multiple amplifiers and/or frequency conversion
NIR [1050 - 2100 nm]

REQUIREMENTS< 60 s
15 °C - 35 °C
100/115/230 VAC
120 VAsoftware/USB, CAN-BUS

Warm-Up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication Options

DIMENSIONS
Laser Head Dimensions / WeightControl Unit Dimensions / Weight

413 x 90 x 178 mm³ / 7 kg
448 x 132 x 437 mm³ / 10 kg

413 x 120 x 178 mm³ / 10 kg
448 x 132 x 437 mm³ / 12 kg* Requires optional intra-cavity actuators for repetition rate tuning

TECHNICAL DRAWINGS

C-Fiber

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSControl Unit

All dimensions in mm

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21

Frequency doubled. Options multiplied.
KEY FEATURES▪ Output power > 250 mW at 780 nm▪ Pulse width < 70 fs▪ Lowest pulse-to-pulse timing jitter▪ Optional intra-cavity actuators for repetition rate tuning▪ Repetition rate stabilization, locking, and synchronization
via repetition rate locking electronics (RRE Synchro)▪ 780 nm and 1560 nm dual output

Options multiplied: C-Fiber 780 expands the versatility of
our scientific series to the 780 nm range. Options include:
Integrated pulse compression, customizable repetition
rates, repetition rate stabilization and synchronization,
multiple output ports, and optional supercontinuum
generation. The design permits simultaneous access to the1560 nm fundamental at an arbitrary power splitting ratio.

22

The C-Fiber series is based on a fully PM fiber design anduses active temperature stabilization to provide lowest
pulse-to-pulse timing jitter, low amplitude and phase noise,and excellent long-term stability.
No matter the configuration, all systems can be user
installed within minutes, are ready to use at the push of abutton, and are entirely maintenance free.

PERFORMANCE DATA

0

1

Pulse width
58 fs(Gaussian fit)

0,5

0

750 760 770 780 790 800 810
Wavelength [nm]-600 -400 -200 0 200 400 600
Time [fs]Optical Spectrum 1560 nm

Signal [a.u.]

8
6

Autocorrelation 1560 nm

Output Power [a.u.]

0,5

0
-5
-10
-15
-20
-25
-30
1450

Output Power Stability 780 nm

Autocorrelation 780 nm

1

Normalized Intensity

Normalized Intensity

Optical Sectrum 780 nm

Norm. Intensity [dB

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

C-Fiber 780

300
250
200
150
100
50
0
0

4

8 12 16 20 24 28 32 36
Time [h]Beam quality 780 nm

Pulse width
65 fs(Gaussian fit)

4
2
0

1550
Wavelength [nm]1650-600 -400 -200 0 200 400 600
Time [fs]M² typically 1.1

WWW.MENLOSYSTEMS.COM | 2024.5

Model

C-Fiber 780

C-Fiber 780 HP

OUTPUT CHARACTERISTICS 780 nm *780 +/- 10 nm> 100 mW
> 250 mW
> 1 nJ> 2.5 nJ
< 100 fs (< 70 fs with optional pulse compression)
100 MHz< 1 ppm over 20 hours (free running)< 2 fs rms [10kHz -1MHz] (free running)
free space
linear, s-pol

Center Wavelength
Average Power
Pulse Energy
Pulse Width
Repetition Rate
Repetition Rate Stability
Timing Jitter
Output Port
Polarization

OUTPUT CHARACTERISTICS 1560 nm *Center Wavelength
Average Power
Pulse Energy
Pulse Width
Repetition Rate
Repetition Rate Stability
Timing Jitter
Output Port
Polarization
Additional Seed Port

1560 +/- 20 nm> 250 mW
> 2.5 nJ

> 500 mW
> 5 nJ< 90 fs
100 MHz< 1 ppm over 20 hours (free running)< 2 fs rms [10kHz -1MHz] (free running)
free space
linear, s-pol
one additional seed port

OPTIONS
Pulse Compression 780 nm
Repetition Rate
Repetition Rate Tuning
Repetition Rate Stabilization,
Locking, and Synchronization **Multiple Output Ports
Supercontinuum Extension

optionally integrated pulse compression for < 70 fs pulse width at 780 nm
factory-set value in the range 50-250 MHz
optional intra-cavity actuators for repetition rate tuning
optional repetition rate locking electronics (RRE Synchro)additional output ports for seeding multiple amplifiers and/or frequency conversion
VIS [550-1050 nm] and/or NIR [1050-2100 nm]

REQUIREMENTS
Warm-Up TimeOperating Temperature
Operating Voltage
Power Consumption
Communication Options< 60 s
15 °C - 35 °C
100/115/230 VAC
120 VAsoftware/USB, CAN-BUS

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONSDIMENSIONS
Laser Head Dimensions / WeightControl Unit Dimensions / Weight

415 x 350 x 110 mm³ / 18 kg
448 x 132 x 437 mm³ / 10 kg

415 x 350 x 140 mm³ / 20 kg
448 x 132 x 437 mm³ / 12 kg* User can switch between 780 nm and 1560 nm output port, arbitrary power splitting ratios possible** Requires optional intra-cavity actuators for repetition rate tuning

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23

Versatile enabler for versatile research
KEY FEATURES▪ Output power > 10 W at 1040 nm▪ Pulse width < 75 fs at 1040 nm▪ Lowest pulse-to-pulse timing jitter▪ Optional intra-cavity actuators for repetition rate tuning▪ Repetition rate stabilization, locking, and synchronization
via repetition rate locking electronics (RRE Synchro)▪ Optional multiple output ports, second harmonic andsupercontinuum generation
A true allrounder: The Orange series is a highly versatile
1040 nm scientific platform, available as a low power
oscillator or in amplified versions with up to > 10 W
average power and pulse widths < 75 fs. Options include
integrated pulse compression, customizable repetition
rates, repetition rate stabilization and synchronization, andmultiple output ports.

Customizable Spectral Bandwidth

1

0,5

Pulse width
97 fs(Gaussian fit)

6
4
2

0

0
1020 1030 1040 1050 1060 1070
Wavelength [nm]-600 -400 -200 0 200 400 600
Time [fs]Optical Spectrum 520 nm

Autocorrelation 520 nm
8Signal [a.u.]

1

0,5

6
4

Normalized Intensity

Autocorrelation 1040 nm
8Signal [a.u.]

Normalized Intensity

Optical Spectrum 1040 nm

1

FWHM
46 nm
40 nm
30 nm
20 nm

0,5

0
1000

10 nm
1020
1040
1060
Wavelength [nm]Beam quality 1040 nm

Pulse width
136 fs(Gaussian fit)

2
0

0
515

24

For wavelength conversion to the visible spectral range, anefficient frequency-doubling extension is readily available.
Like all of our scientific platforms, Orange is based on a
fully PM fiber design and uses active temperaturestabilization to provide lowest pulse-to-pulse timing jitter,
low amplitude and phase noise, and excellent long term
stability.

PERFORMANCE DATA

Normalized Intensity

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

Orange520
Wavelength [nm]525-600 -400 -200 0 200 400 600
Time [fs]M² typically 1.1

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Modelorangeorange HP

orange HP10

> 100 mW
> 1 nJ
chirped, supporting < 150fs

1040 nm +/- 10 nm>1W> 10 nJ< 150 fs (< 75 fs)*
100 MHz> 10 W> 100 nJ
< 200 fs (< 150 fs)*

OUTPUT CHARACTERISTICS 1040 nm
Center Wavelength
Average Power
Pulse Energy
Pulse Width
Repetition Rate
Output port
Polarization
Beam Quality
Additional Seed Portfiber coupledlinear, PM fiber
n.a.

free space
linear, p-pol
M2 < 1.2 (typically 1.1)
one additional seed port

OUTPUT CHARACTERISTICS 520 nm **520 nm +/- 5 nm
> 400 mW
> 4 nJ< 150 fs
100 MHz

Center Wavelength
Average Power
Pulse Energy
Pulse Width
Repetition RateOPTIONS
Pulse Compression 1040 nm
Repetition Rate ***Repetition Rate Tuning
Repetition Rate Stabilization,
Locking, and Synchronization ****
Mulitple Output Ports
Supercontinuum Extension

n.a.

optionally integrated pulse compression
factory-set value in the range 50-250 MHz
optional intra-cavity actuators for repetition rate tuning

optional repetition rate locking electronics (RRE Synchro)additional output ports for seeding multiple amplifiers and/or frequency conversion
n.a.
VIS to NIR [650-1550 nm]

REQUIREMENTS
Warm-Up TimeOperating Temperature
Operating Voltage
Communication Options< 60 s22 +/- 3 °C
100/115/230 VAC
software/USB, CAN-BUS

DIMENSIONS
Laser Head Dimensions / Weight 413 x 178 x 120 mm³ / 10 kg 415 x 400 x 140 mm³ / 26 kg 415 x 400 x 140 mm³ / 26 kg
Control Unit Dimensions / Weight 448 x 132 x 437 mm³ / 10 kg 448 x 132 x 437 mm³ / 11 kg 448 x 227 x 495 mm³ / 25 kg* With optional pulse compression for shorter pulse widths** With optional second harmonic module SHG 520*** Please inquire for specific combinations of average power, pulse duration, and repetitiion rate**** Requires optional intra-cavity actuators for repetition rate tuning

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OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONS

25

Tracking the pulse of time
KEY FEATURES▪ Plug & play electronics platform for repetition ratestabilization, locking, and synchronization▪ Highly versatile modular concept configurable fora wide range of synchronization tasks▪ Superior phase sensitivity through harmonic lock
▪ Support of third party laser systems and actuators▪ Individually tested phase noise performance

Precision control: Whether stabilizing the repetition rate ofa laser, locking it to an external reference, or synchronizing
two lasers in a master/slave configuration, the RRESYNCRO will adapt to a wide range of applications.
Fundamental and harmonic locking capabilities enablesuperior phase sensitivity, and a highly-versatile modular
concept ensures optimal integration and interfacing.

Schematic Set-up

Repetition Rate [MHz]C-Fiber/RRE-SYNCRO: Free-running vs Locked

Free-running

LockedTime [h]PSD [dBrad2/Hz]

Integrated Timing Jitter [fs]Laser vs Laser: Relative Phase Noise

Integrated Timing Jitter [fs]Laser vs RF reference: Relative Phase Noise

Frequency [Hz]26

The RRE-SYNCRO can be operated via an integrated
touchscreen, or operated remotely via a user-friendly
software interface. While designed for compatibility with
Menlo Systems’ scientific laser series, a wide range of third
party laser systems and actuators are also supported.

PERFORMANCE DATAPSD [dBrad2/Hz]

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW

RRE-SYNCRO locking electronics

Frequency [Hz]WWW.MENLOSYSTEMS.COM | 2024.5

ModelRRE-SYNCROCHARACTERISTICS
RMS Timing Jitter
External Reference Options
Stepper Motor Signal Output
Piezo Signal Output
Error Signal Output< 200 fs [0.1 Hz - 500 kHz] or same as reference, whichever applies first *Master laser repetition rate signal
Harmonic master laser repetition rate signal (RF or optical)
10 MHz RF reference signal (external or generated internally)
Sub-D, 9 pin
BNO
BNC

OPTIONS
Custom Reference Frequencies
Custom Phase Detectors
External RF Phase Detector
Adjustable Offset
Tunable Repetition Rate
Repetition Rate Lock Automation
Reference Generation Electronics

Depending on filter availability
For low drift
For reference frequency > 1GHz and enhanced timing jitter performance
To set the relative time delay between laser pulses and reference signal
Locking schemes with tunable repetition rates
Via RRE-Control software
10 or 20 MHz clock module (higher frequencies via integrated phase locked oscillator)

REQUIREMENTS
Storage Temperature
Operating Voltage
Communication

0 °C – 40 °C
110/220 V
USB

DIMENSIONS
Dimensions / Weight449 x 134 x 435 mm³ / 7 kg (19“, 3U)* Values specified for models of the C-Fiber femtosecond fiber laser series. Please contact us when stabilizing lasers from other manufacturers to optimize theperformance of the RRE locking electronics

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OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIERSPECIFICATIONS

27

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEWTechnology primer
Why 9 cuts a good figure
figure 9 ® stands for Menlo Systems’ proprietary fiber laser
design1, with the name derived from the characteristic
shape of the cavity scheme employed. This primer explains
the basic principles behind the technology - and the uniqueadvantages it offers.

MODE LOCKING
In simple terms, mode locking can be considered as a prerequisite to generate femtosecond laser pulses. It involves
designing a laser cavity with operational conditions suchthat the cavity modes will reliably self-organize into a stabletrain of ultrashort pulses, with as little unwanted
background and noise as possible.
In femtosecond fiber lasers, this has often been achievedby employing so-called intrinsic saturable absorbers materials whose absorption decreases at high opticalintensities. However, besides potential degradation overtime, intrinsic effects related to their slow relaxation times
may cause excessive noise floors2, which is detrimental toprecision applications like optical frequency combs. Thishas driven our search for a superior alternative: A fastmode-locking scheme based on effects other thanabsorption.

FIBER LOOP MIRRORS
For an intuitive picture, we refer to a fiber coupler that splits
a light pulse arriving at one of its input ports into two equal
portions (Fig.1/). Connecting the output ports by a fiber
loop, the two portions will propagate in opposite directions
and interfere again at the splitter (Fig.1/). In the simplest
case, this will result in the original pulse being reflectedback to where it came from, and the fiber loop acts like amirror (Fig. 1/).

The reflectivity of the loop mirror changes if the twocounterpropagating pulses for some reason acquire aphase shift relative to each other before interfering. The
phase shift will affect the interference conditions such that acertain fraction of the original input pulse will be transmitted
into the second input port, rather than being reflected(Fig.1/). Now, if the ratio of transmission to reflection canbe designed to depend on the intensity of the original input
pulse, the fiber loop may act as an artificial fast saturable
absorber.

NONLINEAR AMPLIFYING LOOP MIRRORSAn implementation of the this principle, shown in the upper
part of Fig. 2, is commonly referred to as nonlinear
amplifying loop mirror (NALM). It relies on an asymmetricarrangement of an amplifying section of doped fiber and along section of undoped fiber.
The principle of the NALM relies on the phase shift between
pulses that are first amplified before propagating in the longfiber, and pulses travelling in the opposite direction: The
former experience a stronger intensity-dependent
nonlinearity during the round trip. For an increasing nonlinear phase difference, and hence input pulse intensity, thetransmission of the NALM increases, very much analogous
to a saturable absorber.
As shown in Fig. 2, mode-locked laser operation can thus
be achieved in a so-called figure-of-eight laser. A major
drawback of this configuration, however, is the difficulty toachieve self-starting mode-locked operation when using
polarization-maintaining fibers.

1 Patents EP 2637265 A1 / CN 103311780 A / US 8873601 B2
2 Excess carrier-envelope phase noise generation in saturable absorbers, N. Raabe et.al., Optics Lett. (2017), Vol. 42, No. 6, 1068

28

WWW.MENLOSYSTEMS.COM | 2024.5

Why 9 cuts a good figure

Phase
Shifter

ActiveFiber

Splitter

Reflection

Transmission

Pump
Diode

Isolator

OutputCoupler
Output Coupler

Figure 1. Fiber loop mirror

Figure 2. Figure-of-eight laser

Figure 9. figure 9 ®

FIGURE 9
figure 9 ® builds up on the NALM-based concept toadvance its practicability and functional versatility toanother level. The approach relies on operating the NALM
in reflective mode, rather than in transmission, and allows
the implementation of polarization-maintaining fiber
components3.
As shown in Fig. 9, part of the cavity scheme isstraightened into a linear arm, while a non-reciprocal phaseshifter in the NALM part biases the phase acquired bycounterpropagating pulse pairs. The amount of phase bias
can thereby be carefully optimized for self-starting modelocked operation at low intensities, as well as highlyefficient reflection into the linear arm under favorable
operational conditions.
Thanks to its unique features, figure 9® has become thebackbone of our femtosecond fiber laser portfolio,
combining unprecedented performance with functionalversatility:▪

Robust.
Robust self-start of mode-locked operation, in a layout
offering the environmental insensitivity of polarization
maintaining fibers.

▪

Versatile.
Straight-forward integration of intracavity actuators for
repetition rate tuning, synchronization, and carrier
envelope phase (CEP) stabilization.

▪

Low noise.
Exceptionally low intrinsic phase noise, surpassing theperformance of fiber lasers mode locked by intrinsic
saturable absorbers.

▪

Cost-effective.
Excellent cost-performance ratio and low cost ofownership through reduced complexity, compactness,and use of standard telecom components.

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIER

Technology Primer

3 All Polarization-maintaining fiber laser architecture for robust femtosecond pulse generation, W. Hänsel et. al., Appl. Phys. B (2017) 123:41

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29

BEYOND A SUPPLIER | PUT TO THE TEST | FIGURE 9 ® | SCIENTIFIC SERIES | INDUSTRIAL SERIES | APPLICATIONS | OVERVIEW
30

Put to the test
Quality: Made in Germany

QUALITY STANDARDSTESTING & CERTIFICATION

Our products are built in a controlled environment and pass
rigorous final tests, both at component and system level,
before leaving the factory. While we strive to select the best
suppliers for highest quality, all of our products have fully
traceable components. Our manufacturing is organizedaccording to lean manufacturing standards. Processes are
documented and operators undergo continuous training toensure repeatability and reliability in operation. We makeuse of our in-house reference systems to qualify andcalibrate our products against the best standards available.

Besides meeting the conformity standards of the European
Union, our femtosecond fiber lasers are tested and certified
according to internationally recognized quality management standards:

Our processes and services are tested in accordance withDIN EN ISO 9001:2015 norm. As this requires a processoriented quality management system, we have been testingand qualifying every single process at Menlo Systems tomeet the highest quality standards. From order intake to the
manufacturing process - all steps must go hand-in-hand toensure the highest quality lasers “Made in Germany”.

Sine Wave Vibration Test
IEC EN 600068-2-6

Packaged Goods Vibration Test
ISO 8318, IEC EN 600068-2-6
Packaged Goods Fall Test
ISO 4180, IEC EN 600068-2-31

Shock Test
IEC EN 600068-2-17
EMC Test
IEC EN 61326-1, Class a

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A partner to pursue visions and ideas

APPLICATION-TAILORED SUPPORTINNOVATION IS AT OUR COREAt Menlo Systems, we have grown a passionate team ofproduct and application specialists: Our engineers truly
understand the capabilities of our systems and haveextensive knowledge of relevant applications. We make all
efforts needed to define application-tailored solutions
together with our customers - whether cutting-edge
research labs, high-technology start-ups, or industry-leading
OEM integrators.

Tracing its origin to a spin-off from the renowned Max
Planck Institute for Quantum Optics (MPQ) near Munich(Germany), Menlo Systems is close to 200-employees
strong. Many of our team have had the privilege to work insome of the best laboratories around the globe before
joining the company. It comes at no surprise that we
maintain strong bonds to our scientific origins. Menlo
Systems continuously strives to turn today’s ideas into
tomorrow’s products through our leading Development &Custom Projects division, as well as together with research
partners from all over the world.

While our femtosecond fiber lasers are all turn-key
instruments that do not require any periodic maintenance orconsumables, we remain a partner after system installation.
Whenever needed, a skilled and resourced team will
support upgrades, adaptations to evolving user
requirements, or remote diagnoses and troubleshooting –with a 24-hour response philosophy to reduce any
downtime. Via our subsidiaries in the USA, China, andJapan, we can guarantee this on-time support worldwide.
.

2024.5 | WWW.MENLOSYSTEMS.COM

Menlo Systems has been dedicated to serving the global
photonics community from the very start. It is rewarding to
see that our customer’s trust and support has led to acontinuous and organic growth of our product portfolio, ourteam, and the whole company. We continue to engage intrusting collaborations with our customers, while delivering
products Made in Germany that meet growing demands
with our established quality and performance - together weshape light!

OVERVIEW | APPLICATIONS | INDUSTRIAL SERIES | SCIENTIFIC SERIES | FIGURE 9 ® | PUT TO THE THEST | BEYOND A SUPPLIER

Beyond a supplier31

Menlo Systems GmbH is a leading developer and global supplier of instrumentation for high-precision metrology. The
company with headquarters in the west of Munich is known for its Nobel Prize winning optical frequency comb technology.
With subsidiaries in the US, Japan, and China, and a global distributor network, Menlo Systems is closely connected to its
customers from science and industry. The main product lines are optical frequency combs, time and frequency distribution,terahertz systems, ultrafast and ultra-stable lasers, and complete systems for quantum technology applications. Besides
standard products, Menlo Systems develops and manufactures tailored solutions for laser-based precision measurements.

Menlo Systems GmbH
Bunsenstr. 5
D-82152 Martinsried
Germany
T+49 89 189 166 0
F+49 89 189 166 111

Menlo Systems US
6205 Lookout Rd, Unit D,
Boulder, CO 80301
USA
T+1 303 635 6406

Menlo Systems Japan
12-5 Chuo Godo Building
Chuo-2 Chuo-me
Naka-ku Hamamatsu City 430 0929
Japan
T+81 907 409 2021

Menlo Systems China
Room A502, No. 100 Lane 2891
South Qilianshan Road Putou
District Shanghai 200331
China
T+86 21 6071 1678

sales@menlosystems.com

ussales@menlosystems.com

jpsales@menlosystems.com

chinasales@menlosystems.com