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.

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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 nmPulse 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 customIR option with tuning up to 12 µm.

not worse than ISO Class 96)

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 isimpossible with this option.

Nanosecond Lasers

Pulse duration

80 μJ at 3000 nm4)

Nanosecond
Nanosecond Tunable Wavelength
Wavelength Lasers
LasersNT270 seriesNANOSECOND TUNABLE WAVELENGTH L ASERS10)

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 DIRECTREFLECTED OR SCATTERED RADIATION

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

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.COM19NT270 series

NANOSECOND TUNABLE WAVELENGTH L ASERS

3.5

Wavenumber, 103 × cm-1
3.1
2.7
2.5200

Pulse energy, µJ

2.2

linewidth 10 − 150 cmˉ¹(optional)
linewidth < 10 cmˉ¹16012080
4002800

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±5NT277

310213

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