OPEN LOOP THIN FILM LASER GYRO
Assignee
NORTHROP CORPORATION
Filed
Apr 25, 1984
Granted
Jun 23, 1987
Location
WALPOLE MA US
Abstract
The laser gyro includes a laser and a ring resonator. Apparatus is provided for coupling counter-propagating beams of light from the laser into the resonator. The frequency of the laser is scanned across the resonance frequency of the resonator in steps superimposed on a dc level. The intensity of light in one of the counter-propagating beams is detected during each of the steps and the difference in intensity of the detected light is determined. The difference in the intensity of the detected light is used to alter the dc level of the steps so as to drive the difference to zero. The intensity of light in the other of the counter propagating beams is detected during each of the steps and the difference in intensity is also detected. This difference is indicative of the rotation rate of the gyro.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Feb 4, 1986
Rescinded
May 20, 1986
Duration
3 months
Inventor
- 1ANTHONY W. LAWRENCE
Technology Domains
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Record Details
- Patent number
- US 4674881
- Application
- 06603771
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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