NANOSECOND TUNABLE WAVELENGTH L ASERS
Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
Lasers

NT260 ▪ NT230 ▪ NT240 ▪ NT250 ▪ NT270 ▪ NT340

NT260 series

Narrow Linewidth
10 kHz TunableLasers
F E AT U R E S▶ Two years warranty▶ Hands-free no gap wavelengthtuning in 210 – 2600 nm range

Nanosecond Lasers▶ High repetition rate 10 kHz▶ Narrow linewidth down to 1.5 cm⁻¹
▶ Up to 0.7 W output▶ Monolithic rugged frame▶ Motorized output shutters▶ Mixed Q-switched/ mode-lockedoperation▶ Easy control via keypad or PC

BENEFITS▶ Super reliable▶ Wide tuning range 210 – 2600 nm

without gaps

popular applications, like LIF)

▶ Hands-free wavelength tuning –no need for physical intervention

NT262 is a unique narrow linewidth
10 kHz OPO. Pioneering patented
technology enables powerful up
to 0.7 W output in 210 – 2600 nm
wavelengths range while maintaining< 3 cm-1 (typically < 2 cm-1 at mostwavelengths) linewidth that is
highly beneficial for traditional andspecific applications requiring narrow
linewidth and high spectral brightness
pulses. Thus, besides the most of
popular applications, like fluorescenceand pump-probe, the system isalso suitable for such demanding
applications where high resolution
and narrow linewidth are required,like the calibration of detectors andspectroradiometers, metrology or gas

4▶ Output peak in VIS range (useful forspectroscopy. High 10 kHz repetition
rate and hands-free wavelengthtuning makes easy and fast
experiment data collection as neverbefore. The system is highly stable,
ensures excellent short and longterm energy and power stability, hassmaller M2 value if compared withtraditional OPO systems.
In addition to superior specifications,the laser is highly reliable due tolow generation threshold and easyrunning regime. The system fits intomonolithic, rugged housing that
ensure high reliability and low costsof maintenance.

A P P L I C AT I O N S▶ Laser-induced fluorescence

spectroscopy▶ Photoacoustic microscopy▶ Metrology & equipment calibration▶ Pump-probe spectroscopy,

photolysis▶ Mass spectroscopy▶ Environment monitoring, LIDARSAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E-MAIL SALES@EKSPL A.COM WWW.EKSPL A.COM   REV. 240116

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
Lasers

NT260 series

NANOSECOND TUNABLE WAVELENGTH L ASERSS P E C I F I C AT I O N S 1)
NT2621)

OPO

Wavelength range 2)
Signal

405 – 710 nm

Idler

710 – 2600 nm

SH/SF generator (optional)

210 – 405 nm

Output pulse energy/ average power

70 µJ / 700 mW

OPO 3)

SH/SF generator (optional) 4)6 µJ / 60 mW

Minimal tuning step

Signal (405 – 710 nm)

1 cm-1

SH/SF (210 – 405 nm)

2 cm-1

Pulse duration 5)~7 ns

Idler (710 – 2600 nm)

1 cm-1

Pulse and beam parameters

Typical beam diameter 7)

Beam pointing stability 8)
Signal beam
SH/SF9)

Horizontal

PUMP LASER 9)

Pump wavelength

355 nmTypical pump pulse energy

0.3 mJ~7 ns

Near Gaussian in near and far fields< 1.5 mrad

Pulse energy stability (StdDev)< 2.5 %

Pulse repetition rate

Umbilical length11)

Measured at 450 nm. See tuning curves fortypical outputs at other wavelengths.
Measured at 230 nm. See tuning curves fortypical outputs at other wavelengths.

FWHM measured with photodiode featuring
1 ns rise time and 300 MHz bandwidth
oscilloscope.

In signal and idler range. Linewidth is <5 cm⁻¹for 210 – 480 nm range.
Beam diameter is measured at 450 nm at the1/e2 level and can vary depending on thepump pulse energy.
Beam pointing stability is evaluated as
movement of the beam centroid in the focal
plane of a focusing element.
Laser output will be optimized for OPO
operation and specifications may vary witheach unit we manufacture.
Starting from 22 ºC.

Air cooled. Water cooled under request.
Note: The laser and auxiliary units must
be settled in such a place void of dust andaerosols. It is advisable to operate the laser in
air conditioned room, provided that the laseris placed at a distance from air conditioning
outlets. The laser should be positioned on asolid and flat worktable in horizontal position.
Access from one side should be ensured.
Intensive sources of vibration should beavoided near the laboratory (ex. railway stationor similar).

20 000 hours

Typical warm-up time 10)

Power supply unit size (W × L × H)

10)

Hands-free tuning range is from 210 nm to2600 nm. Wavelengths values at margins arerounded.

10 kHzNominal lifetime for pump diodes
PHYSICAL CHARACTERISTICS

6)≤ 50 μrad RMS

Horizontal

Laser head size (W × L × H)

5)

8)

Horizontal

Idler beam

Beam divergence

4)<3 cm⁻¹

4.5 mm × 2.5 mm

Polarization

Beam quality

3)

7)

Linewidth 6)

Pulse duration2)

Due to continuous improvement, allspecifications are subject to change.
Parameters marked typical are illustrative;
they are indications of typical performanceand will vary with each unit we manufacture.
Unless stated otherwise, all specifications aremeasured at 450 nm.

Nanosecond Lasers

Model15 min

400 × 790 × 166 ± 3 mm
553 × 510 × 529 ±3 mm
3m

OPERATING REQUIREMENTS

Cooling 11)

Built-in chiller

Clean air purge

Built-inRoom temperature

18 – 27 °C

Relative humidity

20 – 80 % (non-condensing)Ambient temperature stability
Power requirements±2ºC

DANGER

100 – 240 VAC, single phase 50/60 Hz

Power consumption

Cleanliness of the room

<1 kW

Not worse than ISO Class 9

VISIBLE AND/OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECTREFLECTED OR SCATTERED RADIATION
Tunable, 210 – 2600 nm
Max. 700 mJ, pulse 7 ns
CLASS IV LASER PRODUCTOptions
OptionFeatures-SH/SF

Tuning range extension in 210 – 405 nm range by combining second harmonics and sum-frequency generator
outputs for maximum possible pulse energy-H1064 nm output via separate port

REV. 240116    SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E-MAIL SALES@EKSPL A.COM WWW.EKSPL A.COM5NT260 seriesNANOSECOND TUNABLE WAVELENGTH L ASERS
Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersPERFORMANCE

25.0

80

20.0Wavenumber, 10³ × cm⁻¹
16.7
10.0
5.00

70

950.0

41.6

200

240

Wavenumber, 10³ × cm⁻¹
35.7
31.3
27.8

25.0

8SignalIdler

7Pulse energy, µJ

60

Pulse energy, µJ

3.33

50
4030
206
5432

10

10400

500

600
1000
Wavelength, nm

2000

3000

0280
320
Wavelength, nm

360

400

Nanosecond Lasers

Fig 1. Typical (smoothed) NT262 laser
tuning curves in signal (405 – 710 nm),idler (710 – 2600 nm) ranges

Fig 2. Typical (smoothed) NT262
laser output with –SH/SF option(210 – 405 nm) range

Fig 3. NT262 series laser beam profile at
450 nm in near field

Fig 4. NT262 series laser beam profile at
450 nm in far fieldO U T L I N E D R AW I N G S

108

166.5
203287237
187

400

175

350
435.5

Input panel

6.5

Fig 5. For easier transportation and integration
NT262 features removable handles

O R D E R I N G I N F O R M AT I O N
Note: Laser must beconnected to the mainselectricity all the time. If there
will be no mains electricity for
longer that 1 hour then laser(system) needs warm up for afew hours before switching on.

775811.5

Fig 6. NT262 series laser head dimensions

NT262-SH/SF-H
Model
Optional tuning range
extension:
SH/SF → 210 – 405 nm

Options:H→ extra 1064 nm output

www.phototechnica.co.jp
6〒336-0017 埼玉県さいたま市南区南浦和 1-2-17

TEL:048-871-0067 FAX:048-871-0068

e-mail:voc@phototechnica.co.jp
SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E-MAIL SALES@EKSPL A.COM WWW.EKSPL A.COM   REV. 240116