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1. 发明授权

US4658401A Thin film passive ring resonator laser gyro 失效
标题翻译：薄膜无源环形谐振腔激光陀螺仪
公开(公告)号：US4658401A
公开(公告)日：1987-04-14
申请号：US589711
申请日：1984-03-15
申请人： Joseph P. Segre , John R. Haavisto
发明人： Joseph P. Segre , John R. Haavisto
IPC分类号： G01C19/72 , H01S3/083 , H01S3/10
CPC分类号： G01C19/727 , H01S3/083
摘要： Passive ring resonator laser gyro in which the clockwise and counterclockwise beams do not coexist in the resonator. The laser gyro employs thin film technology. In particular, the preferred laser is a gallium aluminum arsenide laser. Light from the laser is phase-modulated by means of a thin film electro-optic modulator comprising a channel waveguide disposed on an electrically active material and flanked by electrodes for modulating the phase of light from the laser. An electro-optic switch is provided for switching light from the laser to inject alternatingly clockwise and counterclockwise beams into the resonator. The resulting gyro is extremely compact and simply implemented into an integrated, thin film package. Because the clockwise and counterclockwise beams do not coexist in the resonator, various beam interaction effects such as beats, backscatter and feedback into the laser are eliminated.
摘要翻译：无源环谐振器激光陀螺仪，其中顺时针和逆时针光束不共存在谐振器中。激光陀螺采用薄膜技术。特别地，优选的激光器是砷化铝砷化镓激光器。来自激光器的光通过薄膜电光调制器进行相位调制，该薄膜电光调制器包括设置在电活性材料上并且侧面由用于调制来自激光器的光的相位的电极的通道波导。提供电光开关用于切换来自激光器的光，将交替顺时针和逆时针光束注入谐振器。所得到的陀螺仪非常紧凑，简单地实现为集成的薄膜封装。由于顺时针和逆时针光束不共存在谐振器中，所以消除了诸如拍子，后向散射和反馈到激光器中的各种波束相互作用效应。

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