欧兰科技 (Demo Site)-产品指南-激光器和激光光谱测量系统-高功率激光系统-NL120 高能量单纵模调-Q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

Up to 10 J pulse energy
Diode-pumped, self-seeded Single Longitudinal Mode (SLM)master oscillator
Stable master oscillator cavity producing TEM₀₀ spatial mode output
Excellent pulse energy stability
Up to 50 Hz pulse repetition rate
2 ns pulse duration (7 or 25 ns are optional)
Temperature stabilized harmonics generator options
Remote control via keypad
Laser control from supplied netbook PC via USB port

APPLICATIONS

Material processing
OPO, OPCPA, Ti:Sapphire, dye laser pumping
Holography
Nonlinear laser spectroscopy
Optics testing

Description

NL120 series electro-optically Q-switched nanosecond Nd:YAG lasers deliver up to 10 J per pulse with excellent stability. The innovative, diode‑pumped, self‑seeded master oscillator design results in Single Longitudinal Mode (SLM) output without the use of external expensive narrow linewidth seed diodes and cavity‑locking electronics. Unlike more common designs that use an unstable laser cavity, the stable master oscillator cavity produces a TEM₀₀ spatial mode output that results in excellent beam properties after the amplification stages.

NL120 series Q-switched nanosecond lasers are an excellent choice for many applications, including OPO, OPCPA or dye laser pumping, holography, LIF spectroscopy, remote sensing, optics testing and other tasks. For tasks that require a smooth and as close as possible to the Gaussian beam profile, models with improved Gaussian fit are available).

The low jitter of the optical pulse with respect to the Q-switch triggering pulse allows the reliable synchronization between the laser and external equipment. The optional second (SH) (for 532 nm), third (TH) (for 355 nm) and fourth (FH) (for 266 nm) harmonics generators provide access to shorter wavelengths.

The laser is controlled by a supplied netbook PC via USB port with application for Windows™ operating system. In addition, the main settings of the laser can be controlled through an auxiliary user-friendly remote control pad. The remote pad features a backlit display that is easy to read even when wearing laser safety eyewear.

Specifications

Model	NL120	NL121	NL122	NL123	NL124	NL125	NL128	NL129
Main specifications ¹⁾
Pulse energy ²⁾
at 1064 nm	1.9 mJ	150 mJ	300 mJ	600 mJ	1200 mJ	1600 mJ	5000 mJ	10000 mJ
at 532 nm ⁴⁾	0.9 mJ	60 mJ	125 mJ	250 mJ	500 mJ	700 mJ	TBA ³⁾	TBA ³⁾
at 355 nm ⁵⁾	0.6 mJ	40 mJ	80 mJ	160 mJ	320 mJ	450 mJ	TBA ³⁾	TBA ³⁾
at 266 nm ⁶⁾	0.3 mJ	15 mJ	40 mJ	70 mJ	100 mJ	140 mJ	TBA ³⁾	TBA ³⁾
Pulse energy stability (StdDev) ⁷⁾
at 1064 nm	< ;0.5 %	< 1 %
at 532 nm ⁴⁾	< 1 %	< 2 %
at 355 nm ⁵⁾	< 1.5 %	< 3 %
at 266 nm ⁶⁾	< 2 %	< 5 %
Pulse duration at 1064 nm (FWHM) ⁸⁾	2 ± 0.5 ns
Pulse repetition rate ⁹⁾	0 – 50 Hz	10 or 20 Hz	10 Hz
Linewidth	≤ 0.02 cm^-1 (SLM)
Polarization at 1064 ¹⁰⁾	linear, > 90%
Optical pulse jitter (StdDev)¹¹⁾	< 0.2 ns
Beam spatial profile ¹²⁾	near TEM₀₀, > 85 % fit	Hat-Top, > 70 % fit
Typical beam divergence¹³⁾	< 1.5 mrad	< 0.5 mrad
Beam pointing stability ¹⁴⁾	< 25 µrad
Typical beam diameter ¹⁵⁾	~2 mm	~5 mm	~6 mm	~8 mm	~10 mm	~12 mm	~20 mm	~27 mm
Physical characteristics
Laser head size (W × L × H)	305 x 665 x 260 mm	455 x 820 x 270 mm	455 x 1020 x 270 mm		455 x 1220 x 270 mm		600 x 1500 x 300 mm	600 x 2000 x 300 mm
Power supply size (W × L × H)	n/a	550 x 600 x 550 mm		550 x 600 x 830 mm	550 x 600 x 1030 mm		550 x 600 x 1030 mm 2 units	550 x 600 x 1650 mm 2 units
Umbilical length	2.5 m
Operating requirements
Water consumption (max 20 °C)	air cooled	< 10 l/min			< 20 l/min
Ambient temperature	18 – 27 °C
Relative humidity	10 – 80 % (non-condensing)
Power requirements ¹⁶⁾	90-240 V AC, 50/60 Hz	208 or 240 V AC, single phase 50/60 Hz			208 or 380 V AC, three phase 50/60 Hz
Power consumption ¹⁷⁾	< 0.5 kVA	< 1.5 kVA	< 2.5 kVA	< 4 kVA	< 4 kVA	< 5 kVA	< 8 kVA	< 10 kVA

Due to continuous improvement, all specifications are subject to change without notice. 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 1064 nm.
Outputs are not simultaneous.
Contact EKSPLA for more information.
For NL12×-SH and NL12×-SH/FH options.
For NL12×-TH option.
For NL12×-SH/FH option.
Averaged from 300 pulses.
Optional 7 or 25 ns pulse duration. Inquire for pulse energy specifications.
Pulse repetition rates up to 50 Hz are optional. Inquire for pulse energy specifications.
For models without harmonics generators.
With respect to Q-switch triggering pulse.
Measured at 1 m distance from the laser output. Improved fit beam profile is available (see –G option description).
Full angle measured at the 1/e² point at 1064 nm.
Full angle, 300 shoots, RMS.
Beam diameter is measured at 1064 nm at the 1/e² level.
Mains should be specified when ordering.
For 10 Hz pulse repetition rate.

Options

-G OPTION — >85 % GAUSSIAN FIT BEAM PROFILE IN NEAR FIELD

Pulse energies are presented in the table bellow. Beam profile has lower beam intensity modulation when propagated over long distance. Recommended when application require homogenous, without hot spots, light intensity distribution.

Other lasers’ specifications remain the same.

Model	NL121G	NL122G	NL123G	NL124G
Max. pulse energy
at 1064 nm	60 mJ	140 mJ	280 mJ	550 mJ
at 532 nm	20 mJ	40 mJ	80 mJ	165 mJ
at 355 nm	12 mJ	30 mJ	55 mJ	110 mJ
at 266 nm	3 mJ	7 mJ	14 mJ	30 mJ
Typical beam diameter	~3 mm	~5 mm	~7 mm	~9 mm
Beam profile at 1064 nm	Gaussian fit > 85 %

-P7 AND -P25 OPTIONS — 7 OR 25 NS PULSE DURATION

For applications requiring longer pulse duration the laser master oscillator cavity can be modified to produce 7 or 25 ns pulses. Note: some of other specifications can be changed. Please contact Ekspla for detailed datasheets.

Drawings

Typical external dimensions of NL122 and NL123 lasers

Typical external dimensions of NL124 and NL125 lasers

Ordering information

NL120 ordering information