发明名称 |
External cavity diode laser sensor |
摘要 |
A sensor for sensing conditions such as acoustic waves, temperature changes, acceleration current and magnetic fields. The sensor employs a diode laser having its cavity contained between end facets defined by partially reflective mirrors, supplemented by an external cavity formed between one of the end facets of the laser and a translatable external reflector. The reflector is position-responsive to a condition to be sensed. A change in the reflector's positions causes laser output light to be fed back through the mirror into the laser cavity with varying phase such that an increase or decrease in laser emission is created. A change of detector voltage or change in laser current provides an indication of environmental condition being sensed.
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申请公布号 |
US4452533(A) |
申请公布日期 |
1984.06.05 |
申请号 |
US19810286099 |
申请日期 |
1981.07.22 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
MILES, RONALD O.;GIALLORENZI, THOMAS G.;TVETEN, ALAN B. |
分类号 |
G01D5/26;G01K5/70;(IPC1-7):G01B9/02 |
主分类号 |
G01D5/26 |
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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