Conoptics Laser Stabilization System (LASS-II) is designed as an electro-optic feedback loop capable of reducing the amplitude variations commonly associated with lasers. The LASS-II system enhances the signal to noise ratio of the laser over a broad bandwidth. Both an internal and external reference input is provided, allowing analog programming of the laser throughput.
The LASS-II is particularly convenient for use in recording systems where laser power must be varied as a function of position on the recording medium (i.e. video disc, flat bed recorders, etc.). The system is composed of feedback electronics, power supply and electro-optic modulator with integrated beam-splitter and photodiode amplifier.
||514nm, laser power 50mw, lo= .5 lmax
||50mw, low = .5lmax
||1.4mm (1/e 2) TEMOO
|Noise Reduction (Int. Ref Mode)
||1/1@500kHz, 5/1@100kHz, 18/1@50kHz, 100/1@10hHz, 200/1@1kHz, 250/1@200hz
||458nm, -100db Relative to F.S.
|D.C. Stability â€“ Short Term
||.1% Relative to Full Scale (@.5Imax, T=0 -> 1hr.
|External Input Impedance
|External Input Voltage
||0 -> +1 V Max
|Electrical Input Power
||-20W (100-230 Vac)
|The amount of light for calibrationOutput of beam-splitter to diode
||@633nm 300uw@514nm 450uw@488nm 540uw@458nm 820uw*Two different types of beam splitters are available to optimize efficiency and finesse
||85% (excluding beam-splitter)
||2.5mm square *
|Max. Throughput Power
|Standard System (532nm)
||LASS-II with Model 370 E-O Modulator
|Large Aperture (532nm)
||LASS-II with Model 370LA E-O Modulator
|532nm-to-1064nm fsec laser
||LASS-II with Model 350-105 E-O Modulator
|800nm-to-2000nm psec laser
||LASS-II with Model 360-80 E-O Modulator
|UV and DUV Options
LASS II Spec Sheet