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Title: Laser frequency modulator for modulating a laser cavity

Abstract

The present invention relates to a laser frequency modulator for modulating a laser cavity. It is known in the prior art to utilize a PZT (piezoelectric transducer) element in combination with a mirror to change the cavity length of a laser cavity (which changes the laser frequency). Using a PZT element to drive the mirror directly is adequate at frequencies below 10 kHz. However, in high frequency applications (100 kHz and higher) PZT elements alone do not provide a sufficient change in the cavity length. The present invention utilizes an ultrasonic concentrator with a PZT element and mirror to provide modulation of the laser cavity. With an ultrasonic concentrator, the mirror element at the end of a laser cavity can move at larger amplitudes and higher frequencies.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
868403
Patent Number(s):
5132979
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
laser; frequency; modulator; modulating; cavity; relates; prior; utilize; pzt; piezoelectric; transducer; element; combination; mirror; change; length; changes; drive; directly; adequate; frequencies; below; 10; khz; applications; 100; elements; provide; sufficient; utilizes; ultrasonic; concentrator; modulation; move; larger; amplitudes; laser frequency; laser cavity; piezoelectric transducer; cavity length; frequency applications; frequency modulator; /372/

Citation Formats

Erbert, Gaylen V. Laser frequency modulator for modulating a laser cavity. United States: N. p., 1992. Web.
Erbert, Gaylen V. Laser frequency modulator for modulating a laser cavity. United States.
Erbert, Gaylen V. Wed . "Laser frequency modulator for modulating a laser cavity". United States. https://www.osti.gov/servlets/purl/868403.
@article{osti_868403,
title = {Laser frequency modulator for modulating a laser cavity},
author = {Erbert, Gaylen V},
abstractNote = {The present invention relates to a laser frequency modulator for modulating a laser cavity. It is known in the prior art to utilize a PZT (piezoelectric transducer) element in combination with a mirror to change the cavity length of a laser cavity (which changes the laser frequency). Using a PZT element to drive the mirror directly is adequate at frequencies below 10 kHz. However, in high frequency applications (100 kHz and higher) PZT elements alone do not provide a sufficient change in the cavity length. The present invention utilizes an ultrasonic concentrator with a PZT element and mirror to provide modulation of the laser cavity. With an ultrasonic concentrator, the mirror element at the end of a laser cavity can move at larger amplitudes and higher frequencies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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