Method and apparatus to dynamically control the resonator gain of a laser
US5204867A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Jun 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/115
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method or apparatus for controlling the output pulse of a Q-switched laser. The intensity of laser light within the resonator of a Q-switch laser is sensed. A reference pulse related to a desired laser output pulse shape is compared with the sensed intensity. A variation signal corresponding to differences between the sensed light intensity and the reference pulse is fed to a Pockels cell or Q-switch within the resonator. The Q-switch responds to the variation signal by altering the resonator laser light polarization to maintain the Q-switch laser's output pulse in the desired shape. The reference pulse may be dynamically altered to change the shape of the output pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.