Compact Flash-Lamp Pumped Q-switched Nd:YAG Lasers
NL300 series electro-optically Q-switched nanosecond Nd:YAG lasers produce high energy pulses with 3–6 ns duration. Pulse repetition rate can be selected in range of 5–20 Hz.
NL30×HT models are designed for maximum energy extraction from the active element. Up to 1200 mJ pulse energy can be produced at a 5 Hz pulse repetition rate.
A wide range of harmonic generator modules for generation up to a 5thharmonic is available.Harmonic generators can be combined with attenuators that allow smooth output energy adjustment without changing other laser parameters, i.e. pulse duration, pulse-to-pulse stability, divergence or beam profile. For a more detailed description of harmonic and attenuator modules .The extremely compact laser head is approximately 480 mm long and can be fitted into tight spaces. The laser power supply has a 330 × 490 mm footprint. Easy access to the water tank from the back side of the power supply facilitates laser maintenance. Replacement of flashlamp does not require removal of pump chamber from the laser cavity and does not lead to possible misalignment.
The powering unit can be configured with water-to-water or water-to-air heat exchangers. The latter option allows for laser operation without the use of tap water for cooling.
For customer convenience the laser can be controlled via a RS232 or USB port with LabView™ drivers (included) or a remote control pad. Both options allow easy control of laser settings.
FEATURES
Rugged sealed laser cavity
Up to 1200 mJ pulse energy
Better than 1 % StDev pulse energy stability
5–20 Hz pulse repetition rate
3–6 ns pulse duration
Thermo stabilized second, third, fourth and fifth harmonic generator modules
Optional attenuators for fundamental and/or harmonic wavelengths
Water-to-water or water-to-air cooling options
Replacement of flashlamps without misalignment of laser cavity
Remote control via keypad and/or RS232/USB portAPPLICATIONS
Material processing
OPO, Ti:Sapphire, dye laser pumping
Laser spectroscopy
Remote sensing
SPECIFICATIONS 1)
Model
NL303HT NL305HT Pulse repetition rate
10 Hz
20 Hz
5 Hz
10 Hz
Pulse energy:
at 1064 nm
800 mJ
700 mJ
1200 mJ
1100 mJ
at 532 nm 2)
380 mJ
320 mJ
700 mJ
500 mJ
at 355 nm 3)
250 mJ
210 mJ
450 mJ
320 mJ
at 266 nm 4)
80 mJ
60 mJ
120 mJ
100 mJ
at 213 nm 5)
13 mJ
10 mJ
25 mJ
20 mJ
Pulse energy stability (StdDev) 6)
at 1064 nm
1 %
at 532 nm
1.5 %
at 355 nm
3 %
at 266 nm
3.5 %
at 213 nm
6 %
Power drift 7)
±2 %
Pulse duration 8)
3 – 6 ns
Polarization
vertical, >90 %
vertical, >90 %
vertical, >65 %
Optical pulse jitter 9)
<0.5 ns rms
Linewidth
<1 cm⁻¹
Beam profile 10)
Hat-Top in near and near Gaussian in far fields
Typical beam diameter 11)
~8 mm
~10 mm
Beam divergence 12)
<0.6 mrad
Beam pointing stability 13)
50 µrad rms
Beam height
68 mm
PHYSICAL CHARACTERISTICS
Laser head size (W × L × H) 14)
154 × 475 × 128 mm
Power supply unit (W × L × H)
330 × 490 × 585 mm
Umbilical length
2.5 m
OPERATING REQUIREMENTS
Water consumption (max 20 °C) 15)
<8 l/min
<12 l/min
<6 l/min
<10 l/min
Ambient temperature
15–30 °C
Relative humidity
20 – 80 % (non-condensing)
Power requirements 16) 17)
208 – 240 V AC, single phase 50/60 Hz
Power consumption 18)
<1 kVA
<1.5 kVA
<1 kVA
<1.5 kVA
1) Due to continuous improvement, all specifications are subject to change without notice. The 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 and for
basic system without options.
2) With H300SH, H300S or H300SHC harmonic generator modules. See harmonic generator selection guide on the page 63 for more detailed information.
3) With H300THC, H300STH and H300ST harmonic generator modules. See harmonic generator selection guide on the page 63 for more detailed information.
4) With H300SH and H400FHC harmonic generator modules. See harmonic generator selection guide on the page 63 for more detailed information.
5) With H300FiHC harmonic generator module.
6) Averaged from pulses, emitted during 30 sec time interval.
7) Measured over 8 hours period after 20 min warm-up when ambient temperature variation is less than ±2 °C.
8) FWHM.
9) Relative to SYNC OUT pulse.
10) Near field (at the output aperture) TOP HAT fit is >70%.
11) Beam diameter is measured at 1064 nm at the 1/e² level.
12) Full angle measured at the 1/e² level.
13) Beam pointing stability is evaluated as movement of the beam centroid in the focal plane of a focusing element.
14) See harmonic generator selection guide on the page 63 for harmonic generators units sizes.
15) For water cooled version. Air cooled version does not require tap water for cooling.
16) Power requirements should be specified when ordering.
17) 110 V AC powering is available, please inquiry for details.
18) Required current rating can be calculated by dividing power value by mains voltage value.
OUTLINE DRAWINGS
ORDERING INFORMATION
Note: Laser must be connected 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.
商品属性 [波长] 1064nm/532nm/355nm/266nm/213nm [脉宽] 3 – 6 ns [重复频率] 5Hz/10Hz