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Proceedings Article

Design and simulation of a ring laser for miniaturized gyroscopes

[+] Author Affiliations
Michele Armenise

Univ. of Glasgow (Italy)

Peter J. R. Laybourn

Univ. of Glasgow (United Kingdom)

Proc. SPIE 3464, Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications, 81 (October 2, 1998); doi:10.1117/12.323129
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From Conference Volume 3464

  • Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications
  • Mario N. Armenise; Walter Pecorella; Lev S. Sadovnik
  • San Diego, CA, USA | July 19, 1998

abstract

Miniaturized ring laser-based gyroscopes show some significant advantages with respect to the optical fiber gyros such as higher reliability, reduced volume and weight. A semiconductor ring laser has been designed with the potential to be fully integrated in a single chip. This device is formed by a circular strip-loaded waveguide having a width of 2 micrometer and diameter of 3 mm. Its configuration is a heterostructure with separate confinement with a single quantum well in GaAs/AlGaAs, emitting at 860 nm. We have determined the following performance: (1) free spectral range: 7.4 GHz; (2) longitudinal spacing between the spectral lines: 0.18 angstrom; (3) merit factor Q: 510000; (4) finesse: 10.9; (5) resonator efficiency: 70%, when interaction length is greater or equal than 450 micrometer; (6) total efficiency: 7.5%; (7) threshold current: 22 mA. This device can be used in miniaturized gyroscopes which are able to detect rotation speed greater than 0.01 rad/s with a sensitivity of 0.01 degree.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Michele Armenise and Peter J. R. Laybourn
"Design and simulation of a ring laser for miniaturized gyroscopes", Proc. SPIE 3464, Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications, 81 (October 2, 1998); doi:10.1117/12.323129; http://dx.doi.org/10.1117/12.323129


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