发明名称 |
Mode discrimination apparatus |
摘要 |
In an optical system such as a ring laser gyroscope cavity, oscillations occur in many transverse modes. The desired modes are allowed to exist by suppressing undesired modes utilizing a light stop apparatus. One light stop is made by treating a dielectric mirror with an electron beam causing a phase change to occur to the undesired reflected waves. An alternative light stop is made by depositing an absorptive material on a dielectric mirror for absorbing some of the energy of the undesired modes. Both light stop embodiments are adjustable with respect to a laser wave in a resonant cavity.
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申请公布号 |
US4627732(A) |
申请公布日期 |
1986.12.09 |
申请号 |
US19850714402 |
申请日期 |
1985.09.06 |
申请人 |
RAYTHEON COMPANY |
发明人 |
BRAUN, KENNETH H.;PERLMUTTER, MICHAEL S. |
分类号 |
G01C19/66;G01P3/36;(IPC1-7):G01C19/64;H01S3/05 |
主分类号 |
G01C19/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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