发明名称 |
Method and apparatus for detection and control of prelasing in a Q-switched laser |
摘要 |
The present invention detects prelasing in a Q-switch laser and terminates laser operation upon such detection. A detector senses the presence of light beyond a Q-switch and generates an appropriate electrical signal. A comparison stage circuit compares this detector signal with an established threshold value indicative of prelasing and generates a trigger signal if this detector signal exceeds this threshold value. A control stage circuit receives both this trigger value and a sampled Q-switch signal indicative of an opening of the Q-switch. The control stage circuit terminates operation of the laser if the trigger signal from the comparison stage is received while the sampled Q-switch signal is being received to avoid the effects of prelasing. Appropriate delays and timing sequences are established.
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申请公布号 |
US5355383(A) |
申请公布日期 |
1994.10.11 |
申请号 |
US19920988082 |
申请日期 |
1992.12.03 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
LOCKARD, GEORGE E. |
分类号 |
H01S3/11;(IPC1-7):H01S3/00 |
主分类号 |
H01S3/11 |
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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