Laser layout
US4899343A · kind A · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1989 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Jan 5, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a laser layout, a rapid photodiode is coordinated with a fully reflecting mirror of a laser, the output signal of which is compared in a comparator with a reference voltage that may be set on a potentiometer, so that if the power density detected in the resonator of the laser by a photodiode exceeds the reference voltage, the laser is deactivated to protect a frequency doubling crystal by actuating a Q-switch and/or a shutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.