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:
-
- Danville, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (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)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- 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 = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}