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NL120 series High Energy SLM Q-switched Nd:YAG Lasers

NL120 series electro-optically Q-switched nanosecond Nd:YAG lasers provide 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 expensive narrow linewidth seed diodes and cavity‑locking electronics.

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

 

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 (see the description of the –G option on the next page). 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 1)

 Model NL120 NL121 NL122 NL123 NL124 NL125 NL128 NL129
Pulse energy 2)
 at 1064 nm 1.9 mJ 150 mJ 300 mJ 600 mJ 1200 mJ 1600 mJ 5000 mJ 10000mJ
 at 532 nm 3) 0.9 mJ 60 mJ 125 mJ 250 mJ 500 mJ 700 mJ ask 17) ask 17)
 at 355 nm 4) 0.6 mJ 40 mJ 80 mJ 160 mJ 320 mJ 450 mJ ask 17) ask 17)
 at 266 nm 5) 0.3 mJ 15 mJ 40 mJ 70 mJ 100 mJ 140 mJ ask 17) ask 17)
Pulse energy stability (StdDev) 6)
 at 1064 nm <0.5 % <1 %
 at 532 nm 3) <1 % <2 %
 at 355 nm 4) <1.5 % <3 %
 at 266 nm 5) <2 % <5 %
Pulse duration at 1064 nm (FWHM) 7) 2 ± 0.5 ns
Pulse repetition rate 8) 0-50 Hz 10 or 20 Hz 10 Hz
Linewidth ≤0.02 cm-1 (SLM)
Polarization at 1064 nm 9) linear, >90%
Optical pulse jitter (StdDev) 10) < 0.2 ns
Beam spatial profile 11) near TEM00, >85 % fit Hat-Top, >70 % fit
Typical beam divergence 12) <1.5 mrad <0.5 mrad
Beam pointing stability 13) <25 µrad
Typical beam diameter 14) ~2 mm ~5 mm ~6 mm ~8 mm ~10 mm ~12 mm ~20 mm ~27 mm
PHYSICAL CHARACTERISTICS
Laser head size
(W x L x 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 x L x 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 <10l/min <20l/min
Ambient temperature 18-27 °C
Relative humidity 10-80 % (non-condensing)
Power requirements 15) 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 16) < 0.5 kVA <1.5 kVA <2.5 kVA <4 kVA <4 kVA <5 kVA <8 kVA <10 kVA

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

 

Ordering information

NL120 series Q-switched laser ordering information

  • -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.
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 %

Other lasers' specifications remain the same.

 

  • -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.