欧兰科技 (Demo Site)-产品指南-激光器和激光光谱测量系统-可调谐激光器-NT235系列纳秒可调谐DPSS激光器-各种激光器，光谱测量，材料应力和形变分析,CCD相机, 光学传感器，精密位移台，PIV，PLIF等- Powered By SiteEngine

Features & Applications

FEATURES

Integrated DPSS pump laser and OPO into a single housing
Hands-free wavelength tuning from 335 to 2600 nm
High, up to 15 mJ pulse energy from OPO
100 Hz pulse repetition rate
More than 3 mJ output pulse energy in UV
Less than 10 cm⁻¹ linewidth
3 – 6 ns pulse duration
Remote control pad
PC control via USB port and LabVIEW™ drivers
Compact and robust design

APPLICATIONS

Laser-induced fluorescence
Flash photolysis
Photobiology
Photo acoustic imaging
Metrology

Description

NT235 series lasers produce high up to 15 mJ energy pulses at 100 Hz pulse repetition rate, tunable over a broad spectral range. Integrated into a single compact and robust housing, the diode pumped only Q-switched Nd:YAG laser and OPO offers hands‑free, tuning from 335 to 2600 nm. With its 100 Hz repetition rate, the NT235 series laser establishes itself as a versatile tool for many laboratory applications, including photo acoustic imaging, laser induced fluorescence, flash photolysis, photobiology, metrology, etc.

Diode-pumped design, gives maintenance-free laser operation for an extended period of time and improved stability (compared with flash-lamp pumped counterparts). It is cooled by a build-in chiller, which further reduces running costs. OPO pump energy monitor allows monitoring of pump laser performance without the use of external power meters. NT235 series systems controlled from a user-friendly remote control pad or/and a computer. The control pad allows easy control of all parameters and features on a backlit display that is easy to read even with laser safety eyewear.

Optional Items & Accessories

Optional items and accessories allows the laser to be configured for any application:

Tuning range extension in UV range (335 – 531 nm) by second harmonics generation
Fiber coupled output in 350 – 2300 nm range (please inquire for precise fiber coupler selection)
Attenuator option for 670 – 2600 nm range.

Specifications

Model	NT235-SH
OPO ¹⁾
Wavelength range
Signal	670 – 1063 nm
Idler	1064 – 2600 nm
SH	335 – 532 nm ²⁾
Pulse energy ³⁾
OPO	15 mJ
SH	3 mJ at 400 nm
Pulse repetition rate ⁴⁾	100 Hz
Pulse duration ⁵⁾	3 – 6 ns
Linewidth	< 10 cm^-1
Scanning step
Signal	0.1 nm
Idler	1 nm
SH	0.05 nm
Polarization
Signal	horizontal
Idler	vertical
SH	horizontal
OPO beam divergence	< 2.5 mrad ⁶
Typical beam diameter	4 mm ⁷⁾
Pump laser
Pump wavelength	532 nm
Max pump pulse energy	50 mJ ⁸⁾
Pulse duration	5 – 7 ns at 1064 nm
Physical characteristics
Unit size (W × L × H)	360 × 450 × 150 mm
Power supply size (W × L × H)	510 × 400 × 295 mm
Umbilical length, m	2.5 m
Operating requirements
Cooling	built-in chiller
Room temperature	18 – 27 °C
Relative humidity	20 – 80 % (non-condensing)
Power requirements	90 – 240 VAC, single phase 50/60 Hz
Power consumption	< 1 kVA

Due to continuous improvements all specifications are subject to change. Parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 800 nm.
Tuning range of 335 – 532 nm is provided by SH option.
See tuning curves for typical outputs at other wavelengths.
Inquire for other pulse repetition rates.
FWHM measured with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
Full angle measured at FWHM level 800 nm.
Beam diameter is measured at 800 nm at the FWHM level and can vary depending on the pump pulse energy.
The laser max pulse energy will be optimized for best OPO performance. The actual pump laser output can vary with each unit we deliver.

Performance & Drawings

Typical output energy from NT235-100 series tunable wavelength system

NT235 series laser head dimensions