Resonant cavity dither with index of refraction modulator

Coherent light generators – Particular resonant cavity – Folded cavity

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372 25, 372 18, 372 12, 372 29, 372 26, H01S 3083

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active

052512304

ABSTRACT:
A laser gyro having a laser source for providing laser energy includes a laser gain device for receiving lasing energy and generating first and second counterpropagating laser pulses along a common optical path. A detector detects at least one of the pulses and generates an index of refraction control signal representative of the detected at least one laser pulse. The index of refraction of a segment of the optical path is varied in response to the index of refraction control signal such that the index of refraction of the segment of the optical path changes an optical path length for one of the laser pulses. A detector senses the beatnote between the first and second counterpropagating laser pulses.

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Lai, et al., Interference Between Spontaneous Emission in Different Directions, Aug. 10, 1989, pub. Jan. 29, 1990.
Christian, et al., Picosecond Pulsed Diode Ring-Laser Gyroscope Jul. 3, 1991.
Delfyett, et al., Generation of Subpicosecond High-Power Optical Pulses from a Hybrid Mode-Locked Semiconductor Laser Oct. 9, 1990.
Raja, et al., Novel Wavelength-Resonant Optoelectronic Structure and Its Application to Surface-Emitting Semiconductor Lasers Jun. 27, 1988.

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