NT260 ▪ NT230 ▪ NT240 ▪ NT250 ▪ NT270 ▪ NT340

NT340 series

A dream box with thewidest tuning in the market
High Energy
Broadly TunableLasers
F E AT U R E S

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersNANOSECOND TUNABLE WAVELENGTH L ASERS▶ Customers recognized reliability▶ Hands-free no gap wavelengthtuning from 192 to 4400 nm *▶ Up to 90 mJ pulse energy in visible

spectral range▶ Up to 15 mJ pulse energy in UV

spectral range

Nanosecond Lasers▶ Two years warranty▶ Up to 20 mJ pulse energy in MIR

spectral range▶ 3 – 5 ns pulse duration▶ Up to 20 Hz pulse repetition rate

BENEFITS▶ Hands-free wavelength tuning –▶ High integration level saves valuable▶ The system is widely tunable▶ In-house design and manufacturing

no need for physical intervention
192 – 4400 nm and delivers highpulse energy (up to 90 mJ) thatallows the investigation of an
extensive range of materials▶ Narrow linewidth (down to 3 cm⁻¹)and superior tuning resolution(1 – 2 cm⁻¹) allows recording ofhigh quality spectra▶ Flashlamps replacement withoutmisalignment of the laser cavity
saves on maintenance costs

space in the laboratoryof complete systems, including pumplasers, guarantees on-time warranty
and post warranty services andspares supply▶ Variety of control interfaces: USB,

RS232 and optional LAN, WLAN
ensures easy control and integration
with other equipment▶ Remote control via key pad or PC▶ Optional separate shared output

port for 532/1064 nm beam
(separate output port for the355 nm beam is standard)▶ OPO pump energy monitoring▶ Hermetically sealed oscillator

cavity protects non-linear crystals
from dust and humidity* Automatic wavelength scan is optional▶ Attenuator and fiber coupling

options facilitate incorporationof NT340 systems into various
experimental environments

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

The NT340 series tunable wavelengthnanosecond laser seamlessly
integrates the nanosecond opticalparametric oscillator and the Nd:YAG
Q-switched nanosecond laser – all in
a compact housing.
The main system features are:hands-free wavelength tuning from UV
to IR, high conversion efficiency, optional
fiber-coupled output and separate
output port for pump laser beam.

REV. 240116

NT340 has a linewidth of less than
5 cm⁻¹, which is ideal for many
spectroscopic applications.
The laser is designed forconvenient use. The OPO pumpenergy monitoring system helps
to control pump laser parameters.
Replacement of laser flashlamps canbe done without misalignment of
the laser cavity and/or deteriorationof laser performance.

▶ Photobiology▶ Remote sensing▶ Time-resolved spectroscopy▶ Non-linear spectroscopy▶ Vibrational spectroscopy▶ Cavity ring-down CRDS,cavity ring-down laser absorption
CRLAS spectroscopy▶ Infrared spectroscopy▶ Gas spectroscopy

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21

NT340 series

NANOSECOND TUNABLE WAVELENGTH L ASERS
Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersTuning range extending optional add-ons
OptionFeatures-SH

Second harmonic generator for 210 – 410 nm range-SF

Sum-frequency generator for 300 – 410 nm range with high pulse energy-SH/SFCombined option for highest pulse energy in 210 – 410 nm range-DUV

Deep UV option for 192 – 210 nm range output-MIR

Mid infrared option for 2500 – 4400 nm range output

Accessories and other optional add-ons
OptionFeatures

Nanosecond Lasers-FC

Fiber coupled output in 350 – 2000 nm range-ATTN

Attenuator-H, -2H

Separate shared output port for pump laser harmonic (532 or 1064 nm wavelengths)-AW

Air cooled power supply

S P E C I F I C AT I O N S 1)
Model

NT342B

NT342CNT342E

OPO

Wavelength range 2)
Signal

410 – 710 nm 3)

SH generator (optional)

210 – 410 nm

Idler

710 – 2600 nm

SH/SF generator (optional)
DUV generator (optional)

210 – 410 nm
n/a2500 – 4400 nm

n/aOPO 4)

30 mJ

60 mJ

90 mJ

SH/SF generator (optional) 6)

6 mJ

10 mJ

15 mJ

20 mJ

n/a

Output pulse energy

SH generator (optional) 5)

DUV generator (optional) 7)
MIR generator (optional)

8)

Linewidth

4 mJ

0.6 mJ
n/a

Minimal tuning step 10)

6.5 mJ

1.2 mJ< 5 cm⁻¹ 9)Signal (410 – 710 nm)

1 cm⁻¹

SH/SF/DUV (192 – 410 nm)

2 cm⁻¹Idler (710 – 2600 nm)

n/a

Typical beam diameter 12)

5 mm

Typical beam divergence 13)
Polarization

n/a8 mm

10 mm< 2 mradhorizontal

SH/SFhorizontal

Idler

MIR

2 mJ

1 cm⁻¹

3 – 5 nsSignal

DUV

10 mJ

1 cm⁻¹MIR (2500 – 4400 nm)

Pulse duration 11)

22

192 – 210 nm

MIR generator (optional)

verticaln/averticalhorizontal

n/a

SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E-MAIL SALES@EKSPL A.COM WWW.EKSPL A.COM   REV. 240116

S P E C I F I C AT I O N S 1)
Model

NT342B

NT342C

PUMP LASER 14)

Pump wavelength

Typical pump pulse energy

355 nm

100 mJ

Pulse duration
Beam quality

150 mJ< 0.6 mrad

Pulse energy stability (StdDev)
Pulse repetition rate

< 3.5 %

10 or 20 Hz

PHYSICAL CHARACTERISTICS

Unit size (W × L × H) 15)

2.5 m

OPERATING REQUIREMENTS

Water consumption (max 20 °C) 16)< 10 l/min

Room temperature18 –27 °C

Relative humidity

20 – 80 % (non-condensing)Power requirements

200 – 240 VAC, single phase, 50/60 Hz

Power consumption< 1.5 kVA

Cleanliness of the room

3)

4)

5)

6)

7)

8)

Hands-free tuning range is from 192 nm to4400 nm. MIR option is not compatible with SF
and DUV option.

not worse than ISO Class 99)

10)

11)

12)

Tuning range extension to 400 – 709 nm is
optional.

Measured at 450 nm. See tuning curves fortypical outputs at other wavelengths.
Measured at 260 nm. See tuning curves fortypical outputs at other wavelengths.

13)

14)

Measured at 340 nm. SF generator is
optimized for maximum output in
300 – 410 nm range. See tuning curves fortypical outputs at other wavelengths.

Measured at 200 nm. See tuning curves fortypical outputs at other wavelengths.

Measured at 2700 nm. See tuning curves fortypical outputs at other wavelengths.

REV. 240116

Nanosecond Lasers

330 × 490 × 585 mm

Umbilical length2)

10 Hz

456 × 821 × 270 mm

Power supply size (W × L × H)

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 and for basic system
without options.

250 mJ

4 – 7 ns

Hat-top in near field, without hot spots

Beam divergence1)

NT342E

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
Lasers

NT340 series

NANOSECOND TUNABLE WAVELENGTH L ASERS

15)

16)

Linewidth is <8 cm⁻¹ for 210 – 409 nm,
2500 – 4400 nm ranges.

DANGER

When wavelength is controlled from PC. Whenwavelength is controlled from keypad, tuning
resolution is 0.1 nm for signal, 1 nm for idler,
MIR and 0.05 nm for SH, SF and DUV.

VISIBLE AND/OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECTREFLECTED OR SCATTERED RADIATION
Tunable, 192 – 4400 nm
Max. 150 mJ, pulse 4 – 7 ns
CLASS IV LASER PRODUCTFWHM measured with photodiode featuring
1 ns rise time and 300 MHz bandwidth
oscilloscope.

Beam diameter is measured at 450 nm at theFWHM level. It is approximate and can varydepending on the pump pulse energy andwavelength.

Full angle measured at the FWHM level at
450 nm, < 5 mrad at 3000 nm with MIR option.
Separate output port for the 355 nm beam isstandard. Outputs for 1064 nm and 532 nm
beams are optional. Laser output will beoptimised for the best OPO operation andspecifications may vary with each unit wemanufacture.
Length from 821 to 1220 mm depending on
configuration.
Air cooled power supply is available as anoption.

Fig 1. NT340 series laser typical beamprofile at 450 nm after ~1.5 m distancefrom output

SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E-MAIL SALES@EKSPL A.COM WWW.EKSPL A.COM23NT340 series

NANOSECOND TUNABLE WAVELENGTH L ASERS
Wavenumber, 10³ × cm⁻¹
20.0
16.6
14.3 10.0

25.0

10090

5.0

50.0
163.33

NT342E
NT342CNT342B

8070

14Pulse energy, mJ

605040302012

NT342E-SH/SF
NT342C-SH/SF
NT342B-SH/SF

86400

500

600
700 1000
Wavelength, nm

2200

2000 3000

52.6

51.5

Wavenumber, 103 × cm-1
50.5
49.5
48.5

240280320360
Wavelength, nm

Fig 3. Typical output energy of theNT340 series tunable wavelength
systems with SH/SF extension
47.6242.24.67

3.57

2400

2800

Wavenumber, 10³ × cm⁻¹
3.13
2.78
2.50

2.27

20

Pulse energy, mJ

1.8
1.4
1.0
0.6

190

198
202Wavelength, nm

194

206

161284

DUV option for NT342E-SH
DUV option for NT342C-SH
DUV option for NT342B-SH

0.2

2100Fig 4. Typical output energy of theNT340 series tunable wavelength
systems with SH/DUV extension
149

50 78

3200
3600
Wavelength, nm

40004400

Fig 5. Typical output energy of theNT340 series tunable wavelength
systems with MIR extension

86NT342405215456215Fig 6. NT340 series
laser head typicaloutline drawing.
Unit length andport position varydepending on model

Note: Laser must beconnected to the mains
electricity all the time. If there
will be no mains electricity for
longer that 1 hour then laser(system) needs warm up for a
few hours before switching on.

400

239...249

Nanosecond Lasers

Fig 2. Typical output energy of theNT340 series tunable wavelength
systems

O R D E R I N G I N F O R M AT I O N

25.0

40

Pulse energy, mJ

Wavenumber, 10³ × cm⁻¹
35.7
31.327.81010O U T L I N E D R AW I N G S

41.7

165...175

Pulse energy, mJ

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersPERFORMANCE

1020

NT342C-SH-10-AW-H/2H
ModelOutput pulse
energy:B → 30 mJ
C → 50 mJE → 90 mJ

Pulse repetition
rate, in Hz
Optional tuning
range extension
SH 	 → 210 – 410 nm
DUV → 192 – 210 nm
MIR → 2500 – 4400 nm

Options:
AW → water-air heat exchanger
H 	 → 1064 nm output
2H 	 → 532 nm output

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SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E-MAIL SALES@EKSPL A.COM WWW.EKSPL A.COM   REV. 240116