Diode Pumped High Energy Picosecond Nd:YAG Lasers
FEATURES
▶ Diode pumped power amplifier producing up to 50 mJ per pulse at 1064 nm
▶ Beam profile improvement using advanced beam shaping system
▶ Hermetically sealed DPSS master oscillator
▶ Diode pumped regenerative amplifier
▶ Air-cooled
▶ <30 ps pulse duration
▶ Excellent pulse duration stability
▶ Up to 100 Hz repetition rate
▶ Streak camera triggering pulse with <10 ps jitter
▶ Excellent beam pointing stability
▶ Thermo stabilized second, third or fourth harmonic generator options
▶ PC control trough USB and with supplied LabView™ drivers
▶ Remote control via keypad
APPLICATIONS
▶ Time resolved spectroscopy
▶ SFG/SHG spectroscopy
▶ Nonlinear spectroscopy
▶ OPG pumping
▶ Remote laser sensing
▶ Satellite ranging
▶ Other spectroscopic and nonlinear optics applications
Innovative design
The heart of the system is a diode pumped solid state (DPSS) master oscillator placed in a sealed monolithic block, producing high
repetition rate pulse trains (88 MHz) with a low single pulse energy of several nJ. Diode pumped amplifiers are used foramplification of the pulse to 35 mJ or up to 50 mJ output. The high‑gain regenerative amplifier has an amplification factor in the proximity of 10⁶. After the regenerative amplifier, the pulse is directed to a multipass power amplifier that is optimized for efficient stored energy extraction from the Nd:YAG rod, while maintaining a near Gaussian beam profile and low wavefront distortion. The output
pulse energy can be adjusted in approximately 1% steps, while pulse‑to-pulse energy stability remains at less than 0.5% rms at 1064 nm.
Angle-tuned KD*P and KDP crystals mounted in thermostabilised ovens are used for second, third, and fourth harmonic generation. Harmonic separators ensure the high spectral purity of each harmonic guided to different output ports.Built-in energy monitors continuously monitor output pulse energy. Data from the energy monitor can be seen on the remote keypad or on a PC monitor. The laser provides triggering pulses for the synchronisation of your equipment. The lead of the triggering pulse can be up to 500 ns and is user adjustable in ~0.25 ns steps from a personal computer. Up to 1000 μs lead of triggering pulse is available as a pretrigger feature. Precise pulse energy control, excellent short-term and long-term stability, and a 50 Hz repetition rate makes PL2230 series
lasers an excellent choice for many demanding scientific applications.
Simple and convenient laser control
For customer convenience the laser can be operated from personal computer through USB (RS-232 is optional) interface using supplied LabVIEW™ drivers or from remote control pad with backlit display that is easy to read even while wearing laser safety glasses.
SPECIF ICATIONS 1)
Model
PL2230-100 PL2231-100 PL2231-50 PL2231A-50 Pulse energy 2)
at 1064 nm
3 mJ
15 mJ
35 mJ
50 mJ
at 532 nm 3)
1.3 mJ
7 mJ
16 mJ
23 mJ
at 355 nm 4)
0.9 mJ
5 mJ
10 mJ
14 mJ
at 266 nm 5)
0.3 mJ
1.5 mJ
4 mJ
6 mJ
at 213 nm 6)
inquire
inquire
inquire
inquire
Pulse energy stability (StdDev) 7)
at 1064 nm
< 0.2 %
< 0.5 %
at 532 nm
< 0.4 %
< 0.8 %
at 355 nm
< 0.5 %
< 1.1 %
at 266 nm
< 0.5 %
< 1.2 %
at 213 nm
< 1.5 %
< 1.5 %
Pulse duration (FWHM) 8)
28 ps ± 10 %
Pulse duration stability 9)
± 1 %
Power drift 10)
± 2 %
Pulse repetition rate
0 – 100 Hz
100 Hz
50 Hz
50 Hz
Polarization
vertical, >99 % at 1064 nm
Pre‑pulse contrast
> 200:1 (peak-to-peak with respect to residual pulses)
Beam profile 11)
close to Gaussian in near and far fields
Beam divergence 12)
<1.5 mrad
<0.7 mrad
Beam propagation ratio M²
<1.3
<2.5
Beam pointing stability 13)
≤ 20 μrad StdDev
Typical beam diameter 14)
~2.5 mm
~5 mm
~5 mm
~7 mm
Optical pulse jitter
Internal triggering regime 15)
<50 ps (StdDev) with respect to TRIG1 OUT pulse
External triggering regime 16)
~3 ns (StdDev) with respect to SYNC IN pulse
TRIG1 OUT pulse delay 17)
-500 … 50 ns
Typical warm‑up time
5 min
15 min
PHYSICAL CHARACTERISTICS
Laser head size (W × L × H)
456×1031×249 ± 3 mm
Electrical cabinet size (W × L × H)
12 V DC power adapter, 85×170×41 ± 3 mm
471×391×147 ± 3 mm
Umbilical length
2.5 m
OPERATING REQUIREMENTS
Cooling 18)
built‑in chiller
Room temperature
22±2 °C
Relative humidity
20 – 80 % (non-condensing)
Power requirements
110 – 240 V AC, 50/60 Hz
Single phase, 110 – 240 V AC, 5 A, 50/60 Hz
Power consumption
< 0.15 kVA
< 1.0 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 and for basic system without options. Specifications for models PL2231A, B and C are preliminary and should be confirmed against quotation and purchase order.
2) Outputs are not simultaneous.
3) For PL2230 series laser with –SH, -SH/TH, -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.
4) For PL2230 series laser with –TH, -SH/TH or -SH/TH/FH option or –SH/TH/FH/FiH module.
5) For PL2230 series laser with -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.
6) For PL2230 series laser with –SH/TH/FH/FiH module.VISIBLE AND/OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECTREFLECTED OR SCATTERED RADIATION Nd:YAG 1064 nm, 532 nm, 355 nm, 266 nm Max. 140 mJ, pulse 28 ps CLASS IV LASER PRODUCT DANGER
7) Averaged from pulses, emitted during 30 sec time interval.
8) FWHM. Inquire for optional pulse durations in 20 – 90 ps range. Pulse energy specifications may differ from indicated here.
9) Measured over 1 hour period when ambient temperature variation is less than ±1 °C.
10) Measured over 8 hours period after 20 min warm-up when ambient temperature variation is less than ± 2 °C.
11) Near field Gaussian fit is >80%.
12) Average of X- and Y-plane full angle divergence values measured at the 1/e² level at 1064 nm.
13) Beam pointing stability is evaluated from fluctuations of beam centroid position in the far field.
14) Beam diameter is measured at 1064 nm at the 1/e² level.
15) With respect to TRIG1 OUT pulse. <10 ps jitter is provided with PRETRIG standard feature.
16) With respect to SYNC IN pulse.
17) TRIG1 OUT lead or delay can be adjusted with 0.25 ns steps in specified range.
18) Air cooled. Adequate room air conditioning should be provided.
Custom products, tailored for specific applications 1)
Model PL2231B-20 (inquire) PL2231C-20 (inquire)
Pulse energy 2)
at 1064 nm
100 mJ
140 mJ
at 532 nm 3)
45 mJ
60 mJ
at 355 nm 4)
28 mJ
35 mJ
at 266 nm 5)
11 mJ
15 mJ
Pulse duration (FWHM) 6)
80 ps ± 10 %
Pulse repetition rate
20 Hz
20 Hz
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. Specifications for models PL2231B and C are preliminary and should be confirmed against quotation and purchase order.
2) Outputs are not simultaneous.
3) For PL2230 series laser with –SH, -SH/TH, -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.
4) For PL2230 series laser with –TH, -SH/TH or -SH/TH/FH option or –SH/TH/FH/FiH module.
5) For PL2230 series laser with -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.
6) FWHM. Inquire for optional pulse durations in 20 – 90 ps range. Pulse energy specifications may differ from indicated here.
OPTIONS
▶ Option P20 provides 20 ps ±10% output pulse duration. Pulse energies are ~ 30 % lower in comparison to the 28 ps pulse duration version. See table below for pulse energy specifications:
Model PL2231 PL2231A
1064 nm
25 mJ
40 mJ
532 nm
11 mJ
16 mJ
355 nm
7 mJ
10 mJ
266 nm
3 mJ
4 mJ
▶ Option P80 provides 80 ps ±10%output pulse duration. Pulse energy specifications are same as those of 28 ps lasers.
BEAM PROFILE
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] 28 ps ± 10 % [脉冲能量] 50 mJ/23mJ/14mJ/6mJ/inquire [重复频率] 0 – 100 Hz