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Laser Stabilization System (ST-LASS-II) is designed as an electro-optic feedback loop capable of reducing the amplitude variations commonly associated with lasers. The ST-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 ST-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.



Performance Characteristics



514nm, laser power 50mw, lo= .5 lmax

Laser power

50mw, low = .5lmax

Beam diameter

1.4mm (1/e 2) TEM00

Noise reduction

1/1@ 500kHz (Int. Ref. Mode)

5/1 @ 100kHz

18/1 @50kHz

100/1 @10kHz

200/1 @1kHz

250/1 @200hz

Noise floor

458nm, -100db Relative to F.S.

DC stability-short term

<1% Relative to Full Scale (@.5Imax, T=0 -> 1hr.)

External input impedance

1k nominal

External input voltage

0 -> +1 V Max

Electrical input power

-20W (100-230 VAC)

The amount of light for calibration output 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

Static transmission

85% (excluding beam-splitter)

Useable aperture


Optical bandwidth


Max throughput power

3.5w/mm2 TEM00

System options


Standard system (532nm)

ST-LASS-II with Model 370 E-O Modulator

Large aperture (532nm)

ST-LASS-II with Model 370LA E-O Modulator

532nm-1064nm fs laser

ST-LASS-II with Model 350-105 E-O Modulator

800nm-2000nm ps laser

ST-LASS-II with Model 360-80 E-O Modulator

Rack mount

RM Option

UV & DUV options

325nm-to-515nm, 257/266nm


  EO Modulator    EO Pulse Picker     EO Deflector

Sintec Optronics Pte Ltd

10 Bukit Batok Crescent #07-02 The Spire Singapore 658079

Tel: +65 63167112 Fax: +65 63167113  

E-mail: sales@sintec.sg sales@SintecOptronics.com

URL: http://www.sintec.sghttp://www.SintecOptronics.com

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