Apparatus for generating coherent infrared energy of selected wavelength
A tunable source of coherent infrared energy includes a heat pipe having an intermediate region at which cesium is heated to vaporizing temperature and end regions at which the vapor is condensed and returned to the intermediate region for reheating and recirculation. Optical pumping light is directed along the axis of the heat pipe through a first end window to stimulate emission of coherent infrared energy which is transmitted out through an opposite end window. A porous walled tubulation extends along the axis of the heat pipe and defines a region in which cesium vapor is further heated to a temperature sufficient to dissociate cesium dimers which would decrease efficiency by absorbing pump light. Efficient generation of any desired infrared wavelength is realized by varying the wavelength of the pump light.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- EDB-84-037323
- Application Number:
- ON: DE84005911
- OSTI ID:
- 5316053
- Country of Publication:
- United States
- Language:
- English
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Apparatus for generating coherent infrared energy of selected wavelength
Two-photon resonant four-wave mixing and multiphoton ionization of cesium in a heat-pipe oven