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:
-
- Westminster, CO
- Thornton, CO
- Aurora, CO
- Issue Date:
- Research Org.:
- EG & G Inc., Golden, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 875175
- Patent Number(s):
- H001937
- Application Number:
- 08/613,784
- Assignee:
- United States of America as represented by United States Department of Energy (Washington, DC)
- DOE Contract Number:
- AC04-90DP62349
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1996 Feb 29
- 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; amount; illuminating; source; causing; wavelength; quantified; shift; fringes; alternating; bands; produced; mixed; interferometer; laser bar; measuring instrument; light source; laser light; gas pressure; refractive index; coherent light; closed environment; pressure measuring; barometric pressure; statutory invention registration; /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}
}
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