Non-linear optical crystal vibration sensing device
Abstract
A non-linear optical crystal vibration sensing device (10) including a photorefractive crystal (26) and a laser (12). The laser (12 ) produces a coherent light beam (14) which is split by a beam splitter (18) into a first laser beam (20) and a second laser beam (22). After passing through the crystal (26) the first laser beam (20) is counter-propagated back upon itself by a retro-mirror (32), creating a third laser beam (30). The laser beams (20, 22, 30) are modulated, due to the mixing effect within the crystal (26) by vibration of the crystal (30). In the third laser beam (30), modulation is stable and such modulation is converted by a photodetector (34) into a usable electrical output, intensity modulated in accordance with vibration applied to the crystal (26).
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Univ. of California (United States); Michael J Hughes
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 869431
- Patent Number(s):
- 5335548
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- DOE Contract Number:
- AC03-89SF18433
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- non-linear; optical; crystal; vibration; sensing; device; 10; including; photorefractive; 26; laser; 12; produces; coherent; light; beam; 14; split; splitter; 18; 20; 22; passing; counter-propagated; retro-mirror; 32; creating; third; 30; beams; modulated; due; mixing; effect; modulation; stable; converted; photodetector; 34; usable; electrical; output; intensity; accordance; applied; non-linear optical; intensity modulated; laser beams; beam splitter; laser beam; light beam; sensing device; electrical output; coherent light; vibration sensing; optical crystal; photorefractive crystal; crystal vibration; /73/356/359/
Citation Formats
Kalibjian, Ralph. Non-linear optical crystal vibration sensing device. United States: N. p., 1994.
Web.
Kalibjian, Ralph. Non-linear optical crystal vibration sensing device. United States.
Kalibjian, Ralph. Tue .
"Non-linear optical crystal vibration sensing device". United States. https://www.osti.gov/servlets/purl/869431.
@article{osti_869431,
title = {Non-linear optical crystal vibration sensing device},
author = {Kalibjian, Ralph},
abstractNote = {A non-linear optical crystal vibration sensing device (10) including a photorefractive crystal (26) and a laser (12). The laser (12 ) produces a coherent light beam (14) which is split by a beam splitter (18) into a first laser beam (20) and a second laser beam (22). After passing through the crystal (26) the first laser beam (20) is counter-propagated back upon itself by a retro-mirror (32), creating a third laser beam (30). The laser beams (20, 22, 30) are modulated, due to the mixing effect within the crystal (26) by vibration of the crystal (30). In the third laser beam (30), modulation is stable and such modulation is converted by a photodetector (34) into a usable electrical output, intensity modulated in accordance with vibration applied to the crystal (26).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 11 00:00:00 EST 1994},
month = {Tue Jan 11 00:00:00 EST 1994}
}
Works referenced in this record:
Laser Doppler vibration measuring system using bispectral analysis
journal, January 1980
- Sasaki, Osami; Sato, Takuso; Oda, Tetsuya
- Applied Optics, Vol. 19, Issue 1