|문의||김길석박사, 하윤미과장 (02-3461-1103)|
PL2250 series lasers cost-effective design improves laser reliability and reduces running and maintenance costs.
The heart of the system is a diode pumped solid state (DPSS) master oscillator placed in a hermetically sealed monolithic block. The flashlamp pumped regenerative amplifier is replaced by an innovative diode pumped regenerative amplifier. Diode pumping results in negligible thermal lensing, which allows operation of the regenerative amplifier at variable repetition rates, as well as improved long-term stability and maintenance-free operation.
The optimized multiple-pass power amplifier is flashlamp pumped and is optimized for efficient amplification of pulse while maintaining a near Gaussian beam profile and low wavefront distortion. The output pulse energy can be adjusted in approximately 1% steps, at the same time as pulse-to-pulse energy stability remains less than 0.8% 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 directed 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 PC monitor. The laser provides several triggering pulses for synchronization of the customer‘s equipment. The lead or delay of the triggering pulse can be adjusted in 0.25 ns steps from the control pad or PC. 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 up to 20 Hz repetition rate makes PL2250 series lasers an excellent choice for many demanding scientific applications.
For customer convenience the laser can be operated from personal computer throught 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.
|MAIN SPECIFICATIONS 1)|
|at 1064 nm||50 mJ 2)||80 mJ 2)||100 mJ|
|at 532 nm 3)||25 mJ||40 mJ||50 mJ|
|at 355 nm 4)||15 mJ||24 mJ||30 mJ|
|at 266 nm 5)||7 mJ||10 mJ||12 mJ|
|at 213 nm 6)||inquire|
|Pulse energy stability, (StdDev.) 7)|
|at 1064 nm||< 0.8 %|
|at 532 nm||<1.0 %|
|at 355 nm||< 1.1 %|
|at 266 nm||< 1.2 %|
|Pulse duration (FWHM) 8)||30 ± 3 ps|
|Pulse duration stability 9)||± 1.0 ps|
|Repetition rate||20 or 10 Hz||20 or 10 Hz||10 Hz|
|Polarization||linear, vertical, >99 %|
|Pre-pulse contrast||>200:1 (peak-to-peak with respect to residual pulses)|
|Optical pulse jitter||internal / external|
|Internal triggering regime 10)||<50 ps (StdDev) with respect to TRIG1 OUT pulse|
|External triggering regime 11)||~3 ns (StdDev) with respect to SYNC IN pulse|
|SYNC OUT pulse jitter 10)||-500 ... 50 ns|
|SYNC OUT pulse delay 12)||-500 ... 50 ns|
|Beam divergence 13)||< 0.5 mrad|
|Beam pointing stability 14)||≤ 20 μrad StdDev|
|Beam diameter 15)||~ 8 mm||~10 mm||~12 mm|
|Typical warm-up time||30 min|
|Laser head size (W × L × H)||456×1233×249 mm ±3 mm (for PL2251A, B with harmonic and C models)|
456×1031×249 mm ±3 mm (for PL2251A, B models without harmonic)
|Electric cabinet size (W × L × H)||550×600×550 ±3 mm (19″ standard, MR-9)|
|Umbilical length||2.5 m|
|Water consumption (max 20 °C )||water cooled, water consumption (max. 20 °C), <8 l/min, 2 bar|
|Room temperature||22 ± 2 °C|
|Relative humidity||20 – 80 % (non-condensing)|
|Power requirements 16)||single phase, 200 – 240 V AC, 16 A, 50/60 Hz|
|Power 17)||< 1.5 kVA||< 2.5 kVA||< 2.5 kVA|
If laser is optimised for pumping parametrical generator, maximum output energy may be different than specified for stand alone application.
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.
Provides 20 ps ± 10% output pulse duration. Pulse energies are 30% lower in comparison to the 30 ps pulse duration version. Linewidth <2 cm-1 at 1064 nm. See table below for pulse energy specifications:
|1064 nm||35 mJ||60 mJ||80 mJ|
|532 nm||17 mJ||30 mJ||40 mJ|
|355 nm||12 mJ||18 mJ||24 mJ|
|266 nm||5 mJ||8 mJ||10 mJ|
Provides 80 ps ±10% output pulse duration. Pulse energy specifications as below:
|Pulse energy at 1064 nm||1.5 mJ||70 mJ||100 mJ||160 mJ|
Allows locking the master oscillator pulse train repetition rate to an external RF generator, enabling precise external triggering with low jitter. Inquire for more information.