Gyro employing semiconductor laser

Details Gyro employing semiconductor laser Gyro employing semiconductor laser

2005-03-02

2010-11-16

Connolly, Patrick J (Department: 2877)

Optics: measuring and testing

By light interference

Rotation rate

Reexamination Certificate

active

07835008

ABSTRACT:
A semiconductor laser gyro including a photodetector and a semiconductor laser10that emits first and second laser lights. The photodetector is disposed in a position where interference fringes are formed by the first and second laser lights. The semiconductor laser10includes an active layer as well as first and second electrodes13and14for injecting carriers into the active layer. The first laser light is one obtained through emission of a part of laser light (L1) that circulates on a polygonal path in the active layer. The second laser light is one obtained through emission of a part of laser light (L2) that circulates on the polygonal path in the opposite direction to the laser light (L1).

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