Mid-IR Comb

Mid-Infrared Optical Frequency Comb

K E Y S P E C I F I C AT I O N S■ Repetition Rate 100 MHz or 250 MHz■ Spectral Range 3 - 5 and 5 - 14 µm■ High Output Power of up to 200 mW■ Large Spectral Bandwidth of 50 cm-1
– 300 cm-1

A P P L I C AT I O N S■ Fourier-Transform Spectroscopyin the Mid-IR■ Spectroscopy in the “FingerprintRegion” of Molecular Science■ Chemical and Biomolecular Sensingof Molecules■ Fast and Precise Detection ofAtmospheric Gases

F E AT U R E S■ CEP Offset-Free Frequency Comb
■ fs Laser Pulses in the Mid-Infrared■ Phase-Locked Repetition Rate

World-leading optical frequency comb technology is now available in the midinfrared region. Taking advantage of Menlo Systems’ proprietary figure 9® modelocking technology, Menlo Systems’ difference frequency generation (DFG) based
Mid-IR combs provide access to the 3-14 µm range. The reliable, turn-key mid-IR
Comb is an enabling tool for applications in the important fingerprint region forhigh accuracy spectroscopy or nanoFTIR.

OPTIONS■ WAVELENGTH TUNINGPERFORMANCE DATA FOR MID-IR COMBS

5.2

4.7

Center wavelength [ m]

4.2

3.7

3.2

2.7

200
100

Signal [rel.u.]

0.5
0.0

15.0

10.0

Center wavelength [ m]
8.0

6.0

5.0

4.25

2.0
1.0
0.0
1.0

Signal [rel.u.]

01.0

DFG power [mW]

DFG power [mW]

Average output power as function of center wavelength

0.5

2000

2200

2400

2600

2800

3000

Wavenumber [cm 1]
Mid-IR Comb 3-5

3200

3400

0.0
600

800

1000

1200

1400

1600

1800

Wavenumber [cm 1]

2000

2200

Mid-IR Comb 5-8-14

Spectra measured in ambient air showing absorption lines from atmospheric gases.

Technology protected by patents US6785303, US6724788, US7026594, DE10044404, US7804863, US8995796, US8873601, JP4668423, JP5615397, CN103311780

Mid-IR Comb

Mid-Infrared Optical Frequency Comb
S P E C I F I C AT I O N S
MID-IR COMB 3-5
Center Wavelength

MID-IR COMB 5-8-14

factory-set value selectable inthe 3-5 µm range

factory-set value selectable inthe 5-8 µm range

Average Output Powerfactory-set value selectable in the8-14 µm range>100 mW in range 3.2-4.2 µm, >0.5 mWabove 4.2 µm best effort
Wavelength Tuning (optional) discrete, automatedcontinuous, manual>0.5 mW

Repetition Rate

100 MHz

100 MHz or 250 MHz

continuous, manual

100 MHzREQUIREMENTS
Input Requirements
Operating Voltage
Frequency
Operating Temperature

10 MHz frequency reference, power level +7 dBm
100/115/230 VAC
50 to 60 Hz
22 ± 5 °C

OPTICAL SCHEME
DFG

fpump

fsig
fDFG

signal (arb.u.)energy (arb.u.)

DFG

frep

NL-conv.

0fCEO

fDFG

fsig

fpump

Starting from Menlo’s turn-key, reliable figure 9® fiber laser oscillators, a two-color femtosecond laser system is realized using
spectral shifting in highly nonlinear fibers. The two branches of femtosecond pulses of different wavelengths are spatially andtemporally overlapped and subsequently focused into a nonlinear crystal for difference frequency generation (DFG). This allows
the generation of femtosecond pulses in the mid-IR covering the spectral range from 3 µm to 14 µm with high output power
levels of up to 200 mW. Menlo offers a fully automized tuning for the 3-5 µm comb. The comb system covering 5-8 and 8-14
µm requires semi-manual tuning.
For accurate measurements, Menlo offers an easy to use stabilization of the comb repetition rate and carrier envelope offset,
which can be phase locked to an RF reference or optical reference allowing to generate sub-Hz optical linewidth in the mid-IR.
O R D E R I N G I N F O R M AT I O N
Product CodeMid-IR Comb 3-5

Mid-IR Comb 5-8-14

Please call for pricing. Specifications are subject to change without notice. Custom modifications are available, please inquire.

Menlo Systems GmbHT+49 89 189 166 0sales@menlosystems.com

www.menlosystems.com

Menlo Systems US
T+1 303 635 6406
ussales@menlosystems.com

Menlo Systems Japan
T+81 907 409 20 21
jpsales@menlosystems.com

Invisible laser radiation
avoid exposure to beam
Class 4 laser

Menlo Systems China
T+86 21 6071 1678
chinasales@menlosystems.com

D-Mid-Infrared-Comb-EN 29/08/2024