发明名称 |
Partially transparent mirror for a ring laser |
摘要 |
Provided herein is a ring laser gyro system having a special and improved partially transparent output mirror which provides relatively undistorted circularly polarized coherent light beams to the photo detector and amplifier of the system from the laser cavity thereof. This improved mirror achieves its results by sandwiching a non-quarterwave stack between two quarterwave stacks of multi layer, all of which are coated on a Zerodur substate mirror. The improved mirror achieves nearly Zero phase retardation and a Tp/Ts ratio equal to one.
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申请公布号 |
US4904083(A) |
申请公布日期 |
1990.02.27 |
申请号 |
US19890320786 |
申请日期 |
1989.03.10 |
申请人 |
LITTON SYSTEMS, INC. |
发明人 |
LU, SAMUEL;GROBSKY, KEVIN D. |
分类号 |
G01C19/66;G02B5/08;G02B5/28;H01S3/08;H01S3/083 |
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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