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Title: Laser barometer

Abstract

A pressure measuring instrument that utilizes the change of the refractive index of a gas as a function of pressure and the coherent nature of a laser light to determine the barometric pressure within an environment. As the gas pressure in a closed environment varies, the index of refraction of the gas changes. The amount of change is a function of the gas pressure. By illuminating the gas with a laser light source, causing the wavelength of the light to change, pressure can be quantified by measuring the shift in fringes (alternating light and dark bands produced when coherent light is mixed) in an interferometer.

Inventors:
 [1];  [2];  [3]
  1. (Westminster, CO)
  2. (Thornton, CO)
  3. (Aurora, CO)
Issue Date:
Research Org.:
EG & G INC
OSTI Identifier:
875175
Patent Number(s):
H1937
Application Number:
08/613,784
Assignee:
United States of America as represented by United States Department (Washington, DC) SNL
DOE Contract Number:  
AC04-90DP62349
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
laser; barometer; pressure; measuring; instrument; utilizes; change; refractive; index; gas; function; coherent; nature; light; determine; barometric; environment; closed; varies; refraction; changes; amount; illuminating; source; causing; wavelength; quantified; shift; fringes; alternating; dark; bands; produced; mixed; interferometer; laser bar; measuring instrument; light source; laser light; gas pressure; refractive index; coherent light; closed environment; pressure measuring; barometric pressure; /73/250/

Citation Formats

Abercrombie, Kevin R., Shiels, David, and Rash, Tim. Laser barometer. United States: N. p., 2001. Web.
Abercrombie, Kevin R., Shiels, David, & Rash, Tim. Laser barometer. United States.
Abercrombie, Kevin R., Shiels, David, and Rash, Tim. Tue . "Laser barometer". United States. https://www.osti.gov/servlets/purl/875175.
@article{osti_875175,
title = {Laser barometer},
author = {Abercrombie, Kevin R. and Shiels, David and Rash, Tim},
abstractNote = {A pressure measuring instrument that utilizes the change of the refractive index of a gas as a function of pressure and the coherent nature of a laser light to determine the barometric pressure within an environment. As the gas pressure in a closed environment varies, the index of refraction of the gas changes. The amount of change is a function of the gas pressure. By illuminating the gas with a laser light source, causing the wavelength of the light to change, pressure can be quantified by measuring the shift in fringes (alternating light and dark bands produced when coherent light is mixed) in an interferometer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {2}
}

Patent:

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