Prism award nominee

NT260 ▪ NT230 ▪ NT240 ▪ NT250 ▪ NT270 ▪ NT340

NT240 series

Broadly Tunable
kHz Pulsed
DPSS Lasers
F E AT U R E S

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersNANOSECOND TUNABLE WAVELENGTH L ASERS▶ Customers recognized reliability▶ Integrates DPSS pump laser and

OPO into a single housing▶ Hands-free no-gap wavelengthtuning from 210 to 2600 nm*▶ 1000 Hz pulse repetition rate

▶ More than 60 µJ output pulse

Nanosecond Lasers▶ Two years warrantyenergy in UV▶ Less than 5 cm⁻¹ linewidth▶ 3 – 6 ns pulse duration

BENEFITS▶ Hands-free wavelength tuning –no need for physical intervention▶ High repetition rate 1000 Hz

enables fast data collection▶ End pumping with diodetechnology ensures high reliability
and low maintenance costs▶ Narrow linewidth (down to 3 cm⁻¹)and superior tuning resolution(1 – 2 cm⁻¹) allow recording of highquality spectra▶ High integration level saves

valuable space in the laboratory▶ In-house design and manufacturingof complete systems, including pumplasers, guarantees on-time warranty
and post warranty services andspares supply▶ Remote control via key pad or PC▶ Optional separate output for the

OPO pump beam 355 nm, 532 nm
or 1064 nm* Automatic wavelength scan is optional▶ Variety of control interfaces: USB,

RS232, LAN and WLAN ensures easy
control and integration with otherequipment▶ Attenuator and fiber coupling

options facilitate incorporationof NT240 systems into various
experimental environments

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

spectroscopy▶ Pump-probe spectroscopy▶ Non-linear spectroscopy▶ Time-resolved spectroscopy

NT240 series lasers produce pulses
at an unprecedented 1 kHz pulse
repetition rate, tunable over a broad
spectral range. Integrated into asingle compact housing, the diodepumped Q-switched Nd:YAG laser and
OPO offers hands‑free, no-gap tuningfrom 210 to 2600 nm. With its 1000 Hz
repetition rate, the NT240 series laser
establishes itself as a versatile tool
for many laboratory applications,
including laser induced fluorescence,
flash photolysis, photobiology,
metrology, remote sensing, etc.

REV. 240116

NT240 series systems can becontrolled from a remote control pad
or/and a computer using supplied
LabVIEW™ drivers. The control pad
allows easy control of all parametersand features on a backlit display thatis easy to read even with laser safety
eyewear.
Thanks to a DPSS pump source, thelaser requires little maintenance. It
is equipped with air-cooled built-in
chiller, which further reduces runningcosts. A built‑in OPO pump energy
monitor allows monitoring of pump

▶ Photobiology▶ Remote sensing▶ Determination of the telescopethroughput

laser performance without the use of
external power meters. The optional  
feature provides a separate output
port for the 1064, 532 or 355 nm
beam.

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11

NT240 series

NANOSECOND TUNABLE WAVELENGTH L ASERS
Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersS P E C I F I C AT I O N S 1)
Model

NT242

NT242-SH

NT242-SH/SF

OPO

Wavelength range
Signal

405 – 710 nm

Idler

SH and SF

Pulse energy

710 – 2600 nm—

210 – 300 nm

300 – 405 nm—

40 μJ at 230 nm

OPO

Pulse repetition rate
Pulse duration 3)

450 μJ3 – 6 ns

Nanosecond Lasers< 5 cm⁻¹

Signal1 cm⁻¹Minimal tuning step  5)
Idler

SH and SF

1 cm⁻¹—

Polarization
SignalSH and SF

PUMP LASERPump wavelength 7)

3 mJ

3)

PHYSICAL CHARACTERISTICS

Unit size (W × L × H)

355 / 1064 nm
4 – 6 ns at 1064 nm

3 / 1 mJ

520 × 400 × 286 mm

Umbilical length

2.5 m

OPERATING REQUIREMENTS

Cooling

built-in chiller

Room temperature

18 – 27 °C

Relative humidity

20 – 80 % (non-condensing)Power requirements

100 – 240 V AC, single phase 50/60 Hz

Power consumption< 1.5 kW

Cleanliness of the room5)

vertical

456 × 1040 × 297 mm

Power supply size (W × L × H)

4)

3 × 6 mm
355 nmTypical pump pulse energy 8)3)vertical—

Typical beam diameter 6)2)2 cm⁻¹horizontal

Idler

Pulse duration

60 μJ at 320 nm

1000 Hz

Linewidth  4)

1)

210 – 405 nm

2)

SH and SF

12

NT242-SF

not worse than ISO Class 9

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.

See tuning curves for typical outputs at otherwavelengths.

6)

7)

8)

Beam diameter is measured at 450 nm at
the 1/e2 level and can vary depending on thepump pulse energy.
Separate output port for the 3rd and otherharmonic is optional.

The pump laser pulse energy will be optimized
for best OPO performance. The actual pumplaser output can vary with each unit wemanufacture.

DANGERVISIBLE AND/OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECT
REFLECTED OR SCATTERED RADIATION
Tunable, 210 – 2600 nm
Max. 450 µJ, pulse 3 – 6 ns
CLASS IV LASER PRODUCTMeasured at FWHM level with photodiodefeaturing 1 ns rise time and 300 MHz
bandwidth oscilloscope.

Linewidth is <8 cm⁻¹ for 210 – 405 nm range.

For manual input from PC. When wavelength
is controlled from keypad, tuning resolution is
0.1 nm for signal, 1 nm for idler and 0.05 nm
for SH and SF.

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

Accessories and optional items
OptionFeatures-SF

Tuning range extension in 300 – 405 nm range by sum-frequency generation-SH/SF

Tuning range extension in 210 – 405 nm range by combining second harmonics and sum-frequency generator
outputs for maximum possible pulse energy-SCU

Spectral filtering accessory for improved spectral purity of pulses-H, -2H, -3H

1064, 532 and 355 nm output via separate port

-FC

Fiber coupler-Attn

Attenuator option

Tuning range extension in UV range (210 – 300 nm) by second harmonic generation

Nanosecond Lasers-SH

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersNT240 series

NANOSECOND TUNABLE WAVELENGTH L ASERSPERFORMANCE

Near field

Far field

Fig 1. Typical beam profiles of NT242 series lasers at 500 nm

600

Pulse energy, µJ

500
400

50.0

25.0

Wavenumber, 10³ × cm⁻¹
16.6
10.0
5.0

3.3

SH/SF
Signal
Idler

300
200
100
0

REV. 240116

200 300 400 500 600 700 1000 1500 2000 2500 3000
Wavelength, nm

Fig 2. Typical output pulse energyof NT242 series tunable laser

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13

NT240 series

NANOSECOND TUNABLE WAVELENGTH L ASERS

Umbilical cord to power supply

NT242

551

Fiber cable

297±5.0

1074

213

223

405
401
290
245
200
111

1040

200
150
Umbilical cord
to power supply

456

Minimal curvatureradius of umbilical
150 mmNanosecond Lasers

Fiber cable
Minimal curvatureradius of fiber cable 200 mm

170±5.0160±5.0

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersO U T L I N E D R AW I N G S

PORT5 PORT4 PORT3

PORT2 PORT1

Fig 3. NT242 series laser head dimensions

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

NT242-SH-H-2H-SCU
Model
Optional tuning range
extension:SH→ 210 – 300 nm
SF→ 300 – 405 nm
SH/SF → 210 – 405 nm

Options:H→ extra 1064 nm output
2H → extra 532 nm output
SCU → spectral filtering accessory

www.phototechnica.co.jp〒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

14

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

NT260 ▪ NT230 ▪ NT240 ▪ NT250 ▪ NT270 ▪ NT340

NT250 series

TunableWavelength
UV-NIR Range
DPSS Lasers
F E AT U R E S

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersNANOSECOND TUNABLE WAVELENGTH L ASERS▶ Customers recognized reliability▶ Integrates DPSS pump laser and

OPO into a single housing▶ Dry, no water inside!

▶ Hands-free no-gap wavelengthtuning from 335 to 2600 nm*▶ 1000 Hz pulse repetition rate

Nanosecond Lasers▶ Two years warranty▶ More than 1.1 mJ output pulse

energy in NIR▶ 1 – 4 ns pulse duration

BENEFITS▶ Hands-free wavelength tuning –no need for physical intervention▶ High repetition rate (1000 Hz)

enables fast data collection▶ End diode pumping and water-freetechnology ensure high reliability
and low maintenance costs▶ Superior tuning resolution(1 – 2 cm⁻¹) allows recording ofhigh quality spectra▶ High integration level saves

valuable space in the laboratory

NT250 series tunable laser systems
integrates into a single compact
housing a nanosecond OpticalParametric Oscillator (OPO) and
Diode-Pumped Solid–State (DPSS)
Q-switched pump laser.
Diode pumping enables fast dataacquisition at high pulse repetition
rates up to 1 kHz while avoiding
frequent flashlamp changes that arecommon when flashlamp pumped
lasers are used. Special coolingtechnology eliminates the need fortap water, thus further reducing
running and maintenance costs.

REV. 240116▶ In-house design and manufacturingof complete systems, including pumplasers, guarantees on-time warranty
and post warranty services andspares supply▶ Variety of control interfaces: USB,

RS232, LAN and WLAN ensures easy
control and integration with otherequipment▶ Attenuator and fiber coupling

options facilitate incorporationof NT250 systems into various
experimental environments

All lasers feature motorized tuning
across the specified tuning range. The
output wavelength can be set fromcontrol pad with backlit display that iseasy to read even while wearing laser
safety glasses. Alternatively, the laser
can be also controlled from personal
computer using supplied LabVIEW™
drivers.
High conversion efficiency, stable
output, easy maintenance andcompact size make our systems
excellent choice for many applications.

▶ Remote control via key pad or PC* Automatic wavelength scan is optional

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

spectroscopy▶ Pump-probe spectroscopy▶ Photobiology▶ Remote sensing▶ Metrology

Accessories and Optional Items
OptionFeatures-SH

Tuning range extension in
UV range (335 – 670 nm)
by second harmonic
generation-H, -2H

1064 and 532 nm output
via separate port

-FC

Fiber coupler-Attn

Attenuator option

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

15

NT250 series

NANOSECOND TUNABLE WAVELENGTH L ASERS
Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersS P E C I F I C AT I O N S ¹⁾
Model

NT252

OPO

Wavelength range
Signal

670 – 1064 nm

Idler

1065 – 2600 nm

SH

335 – 669 nm

Pulse energy
OPO 2)

1100 µJ

SH 3)

200 µJ

Pulse duration 4)

1 – 4 ns

Pulse repetition rate

1000 Hz

Nanosecond Lasers

Linewidth 5)<10 cm⁻¹

Signal1 cm⁻¹SH

2 cm⁻¹SignalhorizontalSHhorizontal

Minimal tuning step 6)
Idler

1 cm⁻¹

Polarization
Idler

vertical3 × 6 mm

Typical beam diameter 7) 8)
PUMP LASERPump wavelength 9)

532 nmPulse duration

2 – 5 ns

Typical pump pulse energy 10)

4 mJ

11)

Pulse energy stability (StdDev)<2.5 %PHYSICAL CHARACTERISTICS

Unit size (W × L × H)

456 × 1040 × 297 mm

Umbilical length

2.5 m

Power supply size (W × L × H)

520 × 400 × 286 mm

OPERATING REQUIREMENTS

Cooling

air-cooled

Room temperature

18 – 27 °C

Relative humidity

20 – 80 % (non-condensing)Power requirements

100 – 240 V AC, single phase 50/60 Hz

Power consumption<1.5 kW

Cleanliness of the room
1)

2)

3)

4)

5)

16

not worse than ISO Class 9

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 750 nm and for basic system
without options.
Measured at maximum in the interval
700 – 750 nm. See tuning curves for typical
outputs at other wavelengths.
Measured at 400 nm. See tuning curves fortypical outputs at other wavelengths.
Measured at FWHM level with photodiodefeaturing 1 ns rise time and 300 MHz
bandwidth oscilloscope.
In signal and idler range.

6)

7)

8)

9)

10)

11)

For manual input from PC. When wavelength
is controlled from keypad, tuning resolution is
0.1 nm for signal, 1 nm for idler and 0.05 nm
for SH.
Measured at the wavelength indicated in the“Pulse energy” specification row.

Beam diameter is measured at the 1/e² level at
the laser output and can vary depending on
the pump pulse energy.

DANGERVISIBLE AND/OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECT
REFLECTED OR SCATTERED RADIATION
Tunable, 335 – 2600 nm
Max. 4 mJ, pulse 4 – 6 ns
CLASS IV LASER PRODUCT

Separate output port for the 2nd and otherharmonic are optional.

The pump laser pulse energy will be optimized
for best OPO performance. The actual pumplaser output can vary with each unit wemanufacture.
Measured at FWHM level with photodiodefeaturing 1 ns rise time and 300 MHz
bandwidth oscilloscope.

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

PERFORMANCE

33.3

16.6

Wavenumber, 10³ × cm ¹
11.1
6.66
5.00

1200

SH option
NT252 signal
NT252 idler

1000

Pulse energy, µJ

4.00

800
600
400
200
0

300

600

900
1500
Wavelength, nm

2000

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
Lasers

NT250 series

NANOSECOND TUNABLE WAVELENGTH L ASERS

2500

205
105

NT252

187±5

261±5

355

302 MAXO U T L I N E D R AW I N G S

Nanosecond Lasers

Fig 1. Typical output pulse energyof the NT252-SH tunable laser

OUTPUT1

551

200

223

405

Control
panel

456

1040

Fiber cable

Minimal curvatureradius of fiber
cable 200 mm

Fig 3. NT252 series laser head dimensions

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

NT252-SH-2H
Model
Optional tuning range
extension:
SH → 335 – 670 nm

Options:
2H → extra 532 nm output
H→ extra 1064 nm output

www.phototechnica.co.jp〒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
REV. 240116

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

17

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

NT260 ▪ NT230 ▪ NT240 ▪ NT250 ▪ NT270 ▪ NT340

NT270 series

TunableWavelength
NIR-MIR Range
DPSS Lasers
F E AT U R E S▶ Customers recognized reliability▶ Two years warranty▶ Integrates DPSS pump laser

Nanosecond Lasers

and OPO into single housing▶ Separate output ports for thepump laser and OPO beams▶ OPO output wavelength range

from 2500 nm to 4475 nm▶ Narrow linewidth▶ Hands-free, fast wavelengthtuning*▶ <7 ns pulse duration

BENEFITS▶ Hands-free wavelength tuning –no need for physical intervention▶ Wide (2500 – 4475 nm) tuning

range is highly useful for s-SNOMand other IR applications▶ NT270 is the cost effective solution

covering a wide tuning range froma single source▶ End pumping with diodetechnology ensures high reliability
and lots of fired shots leading to
low maintenance costs▶ Air cooling eliminates the need forwater, ensuring easy operation andsimple installation or integration▶ Remote control via key pad or PC* Including automatic wavelength scan

▶ In-house design and manufacturingof complete systems, including pumplasers, guarantees on-time warranty
and post warranty services andspares supply▶ Variety of control interfaces: USB,

RS232, LAN and WLAN ensures easy
control and integration with otherequipment▶ High integration level saves

A P P L I C AT I O N S▶ Scanning Near-field Optical

Microscopy (s-SNOM) microscopy▶ Single molecule vibrational

spectroscopy▶ IR spectroscopy▶ Gas spectroscopy

valuable space in the laboratory

NT270 series tunable laser systems
integrate into a single compact
housing a nanosecond OpticalParametric Oscillator (OPO) and
Diode-Pumped Solid–State (DPSS)
Q-switched pump laser.
Diode pumping enables fast dataacquisition at high pulse repetition
rates up to 1 kHz while avoiding
frequent flashlamp changes that arecommon when flashlamp pumped
lasers are used.

18

The pump lasers do not require waterfor cooling, thus further reducing
running and maintenance costs.
All lasers feature motorized tuning
across the specified tuning range. The
output wavelength can be set fromcontrol pad with backlit display that iseasy to read even while wearing laser
safety glasses. Alternatively, the laser
can be controlled also from personal
computer using supplied LabVIEW™
drivers.

High conversion efficiency, stable
output, easy maintenance andcompact size make our systems
excellent choice for lots ofapplications.

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

NT277

OPO

Wavelength range 2)
Idler

2500 – 4475 nm

Pulse energy 3)
Idler

5 –7 ns

Pulse repetition rate

1000 Hz

Linewidth 5)<10 cm⁻¹

Minimal tuning step 6)
Idler

1 cm⁻¹

Polarization

vertical

Typical beam diameter 7) 8)

4 mm

PUMP LASERPump wavelength1064 nmTypical pump pulse energy 9)
Pulse duration

1.9 mJ<10 ns10)

Beam quality

fit to Gaussian >90%

Pulse energy stability (StdDev)<0.5 %PHYSICAL CHARACTERISTICS

Unit size (W × L × H)

305 × 701 × 270 mm

Power supply size (W × L × H)

449 × 376 × 140 mm

Umbilical length

2.5 m

OPERATING REQUIREMENTS

Coolingby airRoom temperature

18 – 27 °C

Relative humidity

20 – 80 % (non-condensing)Power requirements

100 – 240 V AC, single phase 50/60 Hz

Power consumption< 0.5 kW

Cleanliness of the room
1)

2)

3)

4)

5)

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 3000 nm and for basic system
without options.

Available wavelength range. Inquire for custom
IR option with tuning up to 12 µm.

not worse than ISO Class 9
6)

7)

8)

9)

See tuning curves for typical outputs at otherwavelengths.
Measured art FWHM level with photodiodefeaturing 1 ns rise time and 300 MHz
bandwidth oscilloscope.

Higher energy 10 – 150 cm⁻¹ option is available
for 2500 – 4475 nm tuning range. Narrow
linewidth (<10 cm⁻¹) operation mode is
impossible with this option.

Nanosecond Lasers

Pulse duration

80 μJ at 3000 nm
4)

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersNT270 series

NANOSECOND TUNABLE WAVELENGTH L ASERS

10)

For manual input from PC. When wavelength
is controlled from keypad, tuning resolution
is 1 nm.

DANGER

Measured at the wavelength indicated in the“Pulse energy” specification row.

VISIBLE AND/OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECT
REFLECTED OR SCATTERED RADIATION

Beam diameter is measured at the 1/e² level at
the laser output and varies depending on the
wavelength.

Tunable, 2500 – 4475 nm
Max. 1.9 mJ, pulse <10 ns
CLASS IV LASER PRODUCTThe pump laser pulse energy will be optimized
for the best OPO performance. The actual
pump laser output can vary with each unit wemanufacture.
Measured at FWHM level with photodiodefeaturing 1 ns rise time and 300 MHz
bandwidth oscilloscope.

Note: Laser must be connected to themains 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.

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

19

NT270 series

NANOSECOND TUNABLE WAVELENGTH L ASERS

3.5

Wavenumber, 103 × cm-1
3.1
2.7
2.5

200

Pulse energy, µJ

2.2

linewidth 10 − 150 cmˉ¹
(optional)
linewidth < 10 cmˉ¹

160
120
80
40
0

2800

3200

3600

Wavelength, nm

4000

4400

Nanosecond Lasers

Fig 1. Typical output pulse energy of theNT277 and NT277-XIR tunable laser

O U T L I N E D R AW I N G S
45

170±5

NT277

310

213

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersPERFORMANCE701

Fig 3. NT277 series laser head dimensions

www.phototechnica.co.jp〒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

20

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