Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1991-06-28
1994-11-08
Moskowitz, Nelson
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
372 94, H01S 310, G01C 1966
Patent
active
053631927
ABSTRACT:
A ring laser gyro that minimizes and avoids the effects of lock-in and backscatter. A ring laser is pumped in a lasing cavity with a mode-locked laser. Dual counterrotating pumped pulses are precisely positioned to avoid overlay in optical elements that contribute to lock-in and backscatter. The position of the stimulated counter rotating laser beams is controlled by two methods. In the first method the pumped pulses are synchronized with a wave propagation delay line. In the second method the pumped pulses are chopped by an acousto-optic modulator shutter to precisely time the location of the pumped pulses. Both methods are can be combined to achieve a hybrid synchronized and acousto-optic modulated approach.
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Diels et al; Proc. of the 7nth Int. Symp, Oct. 7-10, 1991, 10p. pp. 133-138; abst. supplied herewith.
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Dennis Michael L.
Diels Jean-Claude M.
Honeywell Inc.
Moskowitz Nelson
Shudy Jr. John G.
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