Driver circuit for stabilizing optical outputs of acoustooptic devices
US5712722A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1996 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Sep 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/33
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system for electronically powering an acoustooptic device. A radio-frequency (RF) generator supplies RF drive power at a drive carrier frequency. A signal source delivers a modulating signal. An RF modulator modulates the RF drive power with the modulating signal. Two compensating RF power generators supply high-frequency and low-frequency compensating power at frequencies greater than and less than the drive carrier frequency. Operational amplifiers and modulators modulate the compensating power with signals derived from the signal source such that the modulated compensating power is the complement of the modulated RF drive power. A summer combines the modulated RF drive power and compensating power to drive the acoustooptic device such that the spatial thermal energy distribution inside the acoustooptic device remains substantially constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.