2 October 1998 Design and simulation of a ring laser for miniaturized gyroscopes
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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.
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Michele Armenise, Michele Armenise, Peter J. R. Laybourn, 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, (2 October 1998); doi: 10.1117/12.323129; https://doi.org/10.1117/12.323129
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