عضویت 
ورود اعضا
راهنمای خرید
LASS II0 pages
Electro-optic components and systems
Toll free: 800-748-3349
Noise Eaters
Significantly lowers noise intensity in laser beams
The LASS-II (Laser Amplitude Stabilization System) is
an electro-optic feedback loop designed to reduce
amplitude variations commonly associated with
most gas lasers. This system is capable of
significantly enhancing the signal/noise ratio of the
laser over a much broader bandwidth than typical
optically coupled current modulation of the plasma
tube. Both an internal and external reference input
is provided, allowing analog programming of the
laser throughput. This 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 three
separable units, the feedback electronics, power supply and electro-optic modulator with
integrated beam-splitter and photodiode amplifier.
LASS-II Performance Specifications:
Wavelength
Laser Power
Beam Diameter
Noise Reduction
Noise Floor
D.C. Stability – Short Term
External Input Impedance
External Input Voltage
Electrical Input Power
The amount of light for calibration
Output of beam-splitter to diode
514nm, laser power 50mw, lo= .5 lmax
50mw, low = .5lmax
2
1.4mm (1/e ) TEMOO
1/1@ 500kHz (Int. Ref. Mode)
5/1 @ 100kHz
18/1 @50kHz
100/1 @10kHz
200/1 @1kHz
250/1 @200hz
458nm, -100db Relative to F.S.
<.1% Relative to Full Scale (@.5Imax, T=0 -> 1hr.
1k nominal
0 -> +1 V Max
-20W (100-230 Vac)
@633nm – 300uw
@514nm – 450uw
