Laser microphone
Abstract
A microphone for detecting sound pressure waves includes a laser resonator having a laser gain material aligned coaxially between a pair of first and second mirrors for producing a laser beam. A reference cell is disposed between the laser material and one of the mirrors for transmitting a reference portion of the laser beam between the mirrors. A sensing cell is disposed between the laser material and one of the mirrors, and is laterally displaced from the reference cell for transmitting a signal portion of the laser beam, with the sensing cell being open for receiving the sound waves. A photodetector is disposed in optical communication with the first mirror for receiving the laser beam, and produces an acoustic signal therefrom for the sound waves.
- Inventors:
-
- Manorville, NY
- Issue Date:
- Research Org.:
- Associated Universities, Inc., Upton, NY (United States)
- OSTI Identifier:
- 873379
- Patent Number(s):
- 6147787
- Application Number:
- 08/989,275
- Assignee:
- Brookhaven Science Associates (Upton, NY); Brookhaven National Laboratory (Upton, NY)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04B - TRANSMISSION
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04R - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- laser; microphone; detecting; sound; pressure; waves; resonator; material; aligned; coaxially; pair; mirrors; producing; beam; reference; cell; disposed; transmitting; portion; sensing; laterally; displaced; signal; receiving; photodetector; optical; communication; mirror; produces; acoustic; therefrom; reference cell; laser resonator; reference portion; pressure waves; optical communication; sound waves; laser beam; laser material; acoustic signal; pressure wave; aligned coaxially; sound pressure; sound wave; /359/
Citation Formats
Veligdan, James T. Laser microphone. United States: N. p., 2000.
Web.
Veligdan, James T. Laser microphone. United States.
Veligdan, James T. Tue .
"Laser microphone". United States. https://www.osti.gov/servlets/purl/873379.
@article{osti_873379,
title = {Laser microphone},
author = {Veligdan, James T},
abstractNote = {A microphone for detecting sound pressure waves includes a laser resonator having a laser gain material aligned coaxially between a pair of first and second mirrors for producing a laser beam. A reference cell is disposed between the laser material and one of the mirrors for transmitting a reference portion of the laser beam between the mirrors. A sensing cell is disposed between the laser material and one of the mirrors, and is laterally displaced from the reference cell for transmitting a signal portion of the laser beam, with the sensing cell being open for receiving the sound waves. A photodetector is disposed in optical communication with the first mirror for receiving the laser beam, and produces an acoustic signal therefrom for the sound waves.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 14 00:00:00 EST 2000},
month = {Tue Nov 14 00:00:00 EST 2000}
}