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Title: Apparatus for generating coherent infrared energy of selected wavelength

Abstract

A tunable source (11) of coherent infrared energy includes a heat pipe (12) having an intermediate region (24) at which cesium (22) is heated to vaporizing temperature and end regions (27, 28) at which the vapor is condensed and returned to the intermediate region (24) for reheating and recirculation. Optical pumping light (43) is directed along the axis of the heat pipe (12) through a first end window (17) to stimulate emission of coherent infrared energy which is transmitted out through an opposite end window (18). A porous walled tubulation (44) extends along the axis of the heat pipe (12) and defines a region (46) in which cesium vapor is further heated to a temperature sufficient to dissociate cesium dimers which would decrease efficiency by absorbing pump light (43). Efficient generation of any desired infrared wavelength is realized by varying the wavelength of the pump light (43).

Inventors:
 [1]
  1. (Danville, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865372
Patent Number(s):
4504953
Assignee:
United States of America as represented by Department of Energy (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; generating; coherent; infrared; energy; selected; wavelength; tunable; source; 11; heat; pipe; 12; intermediate; region; 24; cesium; 22; heated; vaporizing; temperature; regions; 27; 28; vapor; condensed; returned; reheating; recirculation; optical; pumping; light; 43; directed; axis; window; 17; stimulate; emission; transmitted; opposite; 18; porous; walled; tubulation; 44; extends; defines; 46; sufficient; dissociate; dimers; decrease; efficiency; absorbing; pump; efficient; generation; desired; realized; varying; cesium vapor; optical pump; infrared energy; pump light; selected wavelength; optical pumping; heat pipe; temperature sufficient; tunable source; porous wall; coherent infrared; selected wave; generating coherent; /372/

Citation Formats

Stevens, Charles G. Apparatus for generating coherent infrared energy of selected wavelength. United States: N. p., 1985. Web.
Stevens, Charles G. Apparatus for generating coherent infrared energy of selected wavelength. United States.
Stevens, Charles G. Tue . "Apparatus for generating coherent infrared energy of selected wavelength". United States. https://www.osti.gov/servlets/purl/865372.
@article{osti_865372,
title = {Apparatus for generating coherent infrared energy of selected wavelength},
author = {Stevens, Charles G.},
abstractNote = {A tunable source (11) of coherent infrared energy includes a heat pipe (12) having an intermediate region (24) at which cesium (22) is heated to vaporizing temperature and end regions (27, 28) at which the vapor is condensed and returned to the intermediate region (24) for reheating and recirculation. Optical pumping light (43) is directed along the axis of the heat pipe (12) through a first end window (17) to stimulate emission of coherent infrared energy which is transmitted out through an opposite end window (18). A porous walled tubulation (44) extends along the axis of the heat pipe (12) and defines a region (46) in which cesium vapor is further heated to a temperature sufficient to dissociate cesium dimers which would decrease efficiency by absorbing pump light (43). Efficient generation of any desired infrared wavelength is realized by varying the wavelength of the pump light (43).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

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