Showing papers on "Ring laser gyroscope published in 1970"

Laser gyro dither circuit

Abstract: Frequency coupling of counterrotating beams in a gaseous laser gyro is prevented by varying the discharge current in the laser. The circuit is for use with a laser having a common cathode and two anodes, and includes a source of random signals, such as a noise diode generator. The signals from the generator are amplified and limited to give a variable frequency and pulsewidth rectangular wave. This wave, in its original form, and in a phase-shifted form, controls a push-pull amplifier. The controlled elements (such as transistors) in the push-pull amplifier are in series with the laser anodes. Thus, a random rectangular wave is effectably applied to the discharge current through each anode.