欧兰科技 (Demo Site)-产品指南-激光器和激光光谱测量系统-皮秒激光器-PL2230 系列高能量全固态DPSS 锁模Nd:YAG 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

Beam profile improvement using advanced beam shaping system
Hermetically sealed DPSS master oscillator
Diode pumped regenerative amplifier
Diode pumped power amplifier producing up to 35 mJ per pulse (140 mJ preliminary) at 1064 nm
Air-cooled
<28 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

Description

Ekspla is proud to introduce the first commercial fully diode pumped high pulse energy mode-locked laser, producing 28 ps pulses with up to 35 mJ (50 mJ preliminary) at 50 Hz pulse repetition rate.

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 for amplification of the pulse to 35 mJ (140 mJ preliminary) 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. Harmonics 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. If required, up to 1000 μs lead of triggering pulse is available when a PRETRIG option is installed.

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 controlled through a user‑friendly remote control pad or USB interface.

The remote pad allows easy control of all parameters and features a back‑lit display that is easy to read even with laser safety eye-wear. Alternatively, the laser can be controlled from a personal computer with supplied software for a Windows™ operating system. LabView™ drivers are supplied as well.

Specifications

Model	PL2230-50	PL2231-100	PL2231-50	PL2231A-50 Preliminary	PL2231B-20 Preliminary	PL2231C-20 Preliminary
Main specifications ¹⁾
Pulse energy ²⁾
at 1064 nm	3 mJ	15 mJ	35 mJ	50 mJ	100 mJ	140 mJ
at 532 nm ³⁾	1.3 mJ	7 mJ	16 mJ	23 mJ	45 mJ	60 mJ
at 355 nm ⁴⁾	0.9 mJ	5 mJ	10 mJ	14 mJ	28 mJ	35 mJ
at 266 nm ⁵⁾	0.3 mJ	1.5 mJ	4 mJ	6 mJ	11 mJ	15 mJ
at 213 nm ⁶⁾	0.2 mJ	0.7 mJ	1.8 mJ	2.5 mJ	5 mJ	7 mJ
Pulse energy stability (Std. Dev) 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 %				80 ps ± 10 %
Pulse duration stability ⁹⁾	± 1 %
Power drift ¹⁰⁾	± 2 %
Pulse repetition rate	0 – 50 Hz	100 Hz	50 Hz	50 Hz	20 Hz	20 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⁾	≤ 10 μrad StdDev	≤ 30 μrad StdDev
Typical beam diameter ¹⁴⁾	~2.5 mm	~5 mm	~6 mm	~7 mm
Optical pulse jitter
Internal triggering regime¹⁵⁾	<50 ps (StdDev) with respect to TRIG1 OUT pulse
External triggering regime¹⁶⁾	~3 ns (StdDev) with respect to SYNC IN pulse
TRIG1 OUT pulse delay ¹⁷⁾	-500 … 50 ns
Typical warm-up time	5 min	30 min
Physical characteristics
Laser head size (W × L × H)	456×1031×249 ± 3 mm				456×1233×249 ± 3 mm	456×1432×249 ± 3 mm
Electrical cabinet size (W × L × H)	12 V DC power adapter, 85×170×41 ± 3 mm	471×391×147 ± 3 mm			520×600×331 ± 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			< 1.5 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. Specifications for models PL2231A, B and C are preliminary and should be confirmed against quotation and purchase order.
Outputs are not simultaneous.
For PL2230 series laser with –SH, -SH/TH, -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.
For PL2230 series laser with –TH, -SH/TH or -SH/TH/FH option or –SH/TH/FH/FiH module.
For PL2230 series laser with -SH/FH or -SH/TH/FH option or –SH/TH/FH/FiH module.
For PL2230 series laser with –SH/TH/FH/FiH module.
Averaged from pulses, emitted during 30 sec time interval.
FWHM. Inquire for optional pulse durations in 20 – 90 ps range. Pulse energy specifications may differ from indicated here.
Measured over 1 hour period when ambient temperature variation is less than ±1 °C.
Measured over 8 hours period after 20 min warm-up when ambient temperature variation is less than ± 2 °C.
Near field Gaussian fit is >80%.
Average of X- and Y-plane full angle divergence values measured at the 1/e² level at 1064 nm.
Beam pointing stability is evaluated from fluctuations of beam centroid position in the far field.
Beam diameter is measured at 1064 nm at the 1/e² level.
With respect to TRIG1 OUT pulse. <10 ps jitter is provided with PRETRIG option.
With respect to SYNC IN pulse.
TRIG1 OUT lead or delay can be adjusted with 0.25 ns steps in specified range.
Air cooled. Adequate room air conditioning should be provided.

Options

PRETRIGER FOR STREAK CAMERA TRIGGERING OPTION (–PRETRIG)

PL2230 series lasers have build-in low-jitter delay generator for streak camera triggering. Provides low jitter < 10 ps StdDev triggering pulse.

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.

Performance & Drawings

Typical near field output beam profile of PL2231 model laser

Dimensions of PL2230 series laser head

Ordering information

PL2230 series picosecond laser ordering information