Optical frequency doubler using electro-optic crystal with improved feedback control of crystal phase match
US4019159A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Oct 14, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/37
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical frequency doubling arrangement is disclosed in which the indices of refraction of light in a frequency doubling electro-optic crystal are controlled by both electric field pulses applied across the crystal and heater control pulses for controlling the temperature of an oven in which the crystal is mounted. Both the electric field pulses and the heater control pulses have a duty cycle determined by the detected optical power output from the crystal at the desired double frequency, the heater control pulses being responsive to the measured oven temperature as well. The arrangement is especially suitable for doubling the frequency of 1.06 .mu.m laser beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.