Non-linear optical crystal vibration sensing device
Patent
·
OSTI ID:7204319
A non-linear optical crystal vibration sensing device including a photorefractive crystal and a laser is disclosed. The laser produces a coherent light beam which is split by a beam splitter into a first laser beam and a second laser beam. After passing through the crystal the first laser beam is counter-propagated back upon itself by a retro-mirror, creating a third laser beam. The laser beams are modulated, due to the mixing effect within the crystal by vibration of the crystal. In the third laser beam, modulation is stable and such modulation is converted by a photodetector into a usable electrical output, intensity modulated in accordance with vibration applied to the crystal. 3 figs.
- DOE Contract Number:
- AC03-89SF18433
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5335548; A
- Application Number:
- PPN: US 7-901289
- OSTI ID:
- 7204319
- Resource Relation:
- Patent File Date: 19 Jun 1992
- Country of Publication:
- United States
- Language:
- English
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