Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom

Title: Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom

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Abstract

Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom. Differential phase measurements on scattered light from particles are possible using the two-frequency Zeeman effect laser which emits two frequencies of radiation 250 kHz apart. Excellent discrimination and reproducibility for various pure pollen and bacterial samples in suspension have been observed with a single polarization element. Additionally, a 250 kHz beat frequency was recorded from an individual particle traversing the focused output from the laser in a flow cytometer.

Inventors:

Johnston, Roger G ^[1]

Los Alamos, NM

Publication Date:: 1988-01-01

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 866679

Patent Number(s):: US 4764013

Assignee:: United States of America as represented by United States (Washington, DC)

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: interferometric; apparatus; method; detection; characterization; particles; light; scattered; therefrom; differential; phase; measurements; two-frequency; zeeman; effect; laser; emits; frequencies; radiation; 250; khz; apart; excellent; discrimination; reproducibility; various; pure; pollen; bacterial; samples; suspension; observed; single; polarization; element; additionally; beat; frequency; recorded; individual; particle; traversing; focused; output; flow; cytometer; individual particle; light scattered; scattered light; flow cytometer; beat frequency; phase measurement; differential phase; scattered therefrom; interferometric apparatus; /356/

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                    Johnston, Roger G. Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom.  United States: N. p., 1988. 
        Web.

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                    Johnston, Roger G. Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom.  United States.

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                    Johnston, Roger G. Fri .  
        "Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom".  United States.  https://www.osti.gov/servlets/purl/866679.

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@article{osti_866679,

  title        = {Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom},

  author       = {Johnston, Roger G},

  abstractNote = {Interferometric apparatus and method for detection and characterization of particles using light scattered therefrom. Differential phase measurements on scattered light from particles are possible using the two-frequency Zeeman effect laser which emits two frequencies of radiation 250 kHz apart. Excellent discrimination and reproducibility for various pure pollen and bacterial samples in suspension have been observed with a single polarization element. Additionally, a 250 kHz beat frequency was recorded from an individual particle traversing the focused output from the laser in a flow cytometer.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/866679},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1988},

  month        = {1}

}

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