Optomechanical gyroscope utilizing the Sagnac effect
Abstract
An apparatus and a method for detecting rotation based on the Sagnac effect is disclosed. Input light having sufficient power is injected into a circulating optical resonator to thereby excite an optomechanical oscillation of the resonator at an instantaneous mechanical angular frequency. Rotation of the circulating optical resonator causes a change in a frequency of the optomechanical oscillation of the resonator, which in turn causes the instantaneous mechanical angular frequency to change. The optomechanical oscillation produces modulation sidebands in the resonating optical field at the instantaneous mechanical angular frequency and harmonics thereof, which are demodulated from the optical frequency by detection in a photodetector. Differences in the instantaneous mechanical angular frequency induced by rotation are detected by processing the photodetector output signal.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1600228
- Patent Number(s):
- 10458795
- Application Number:
- 16/100,925
- Assignee:
- National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01C - MEASURING DISTANCES, LEVELS OR BEARINGS
- DOE Contract Number:
- NA0003525
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 08/10/2018
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 47 OTHER INSTRUMENTATION
Citation Formats
Grine, Alejandro J., Serkland, Darwin K., and Wood, Michael. Optomechanical gyroscope utilizing the Sagnac effect. United States: N. p., 2019.
Web.
Grine, Alejandro J., Serkland, Darwin K., & Wood, Michael. Optomechanical gyroscope utilizing the Sagnac effect. United States.
Grine, Alejandro J., Serkland, Darwin K., and Wood, Michael. Tue .
"Optomechanical gyroscope utilizing the Sagnac effect". United States. https://www.osti.gov/servlets/purl/1600228.
@article{osti_1600228,
title = {Optomechanical gyroscope utilizing the Sagnac effect},
author = {Grine, Alejandro J. and Serkland, Darwin K. and Wood, Michael},
abstractNote = {An apparatus and a method for detecting rotation based on the Sagnac effect is disclosed. Input light having sufficient power is injected into a circulating optical resonator to thereby excite an optomechanical oscillation of the resonator at an instantaneous mechanical angular frequency. Rotation of the circulating optical resonator causes a change in a frequency of the optomechanical oscillation of the resonator, which in turn causes the instantaneous mechanical angular frequency to change. The optomechanical oscillation produces modulation sidebands in the resonating optical field at the instantaneous mechanical angular frequency and harmonics thereof, which are demodulated from the optical frequency by detection in a photodetector. Differences in the instantaneous mechanical angular frequency induced by rotation are detected by processing the photodetector output signal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 29 00:00:00 EDT 2019},
month = {Tue Oct 29 00:00:00 EDT 2019}
}
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