Laser barometer

Abercrombie, Kevin R.; Shiels, David; Rash, Tim

Title: Laser barometer

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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:: Abercrombie, Kevin R.; Shiels, David; Rash, Tim

Issue Date:: 2001-02-06

Research Org.:: Rocky Flats Environmental Technology Site (RFP), Golden, CO (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1176673

Patent Number(s):: H001937

Assignee:: The United States of America as represented by the 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:: 47 OTHER INSTRUMENTATION; 42 ENGINEERING; statutory invention registration

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                    Abercrombie, Kevin R., Shiels, David, and Rash, Tim. Laser barometer.  United States: N. p., 2001. 
        Web.

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                    Abercrombie, Kevin R., Shiels, David, & Rash, Tim. Laser barometer.  United States.

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                    Abercrombie, Kevin R., Shiels, David, and Rash, Tim. Tue .  
        "Laser barometer".  United States.  https://www.osti.gov/servlets/purl/1176673.

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@article{osti_1176673,

  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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