Method and circuit for controlling the evolution time interval of a laser output pulse
US5128949A · kind A · utility
7Cited by
0References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1989 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | May 31, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1306
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention, a method and circuit for controlling the evolution time interval of a laser output pulse, comprises means for pumping a laser medium 13 in a resonator 10 that includes a Q-switch 22 and polarizer 26 that act in combination to control the loss in the resonator 10. A photodiode 11 senses the resulting fluorescence 12 which is applied to a two level Q-switch driver 27 the output of which selectively adjusts the level of loss in the Q-switch 22 and polarizer 26 from high to intermediate to substantially zero loss states to control the evolution time interval of the resulting laser output pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.