Nanosecond Near Millimeter Waves.
Abstract
The primary goals of this study were directed at theoretical and experimental aspects of the use of mode-locked carbon dioxide lasers as a means of generating temporally short near millimeter (NMM) wavelengths in the range 100 micrometers to 3 millimeters by optical pumping of light molecules. Both aspects of the work were quite successful in that mode-locked trains of NMM waves were generated, sometimes with a high conversion efficiency, and the overall space-time evolution and conversion predicted by the modeling was in accord with the experimental observation. The main implications of this work are that pulses shorter than the inverse bandwidth can be produced but that the overall pulse evolution occurs on a longer spatial scale than for bandwidth limited pulses. The role of cooperative phenomena such as superradiance and multiphoton effects such as stimulated Raman emission were seen to be important in explaining the evolution of the pulses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1981
- Accession Number
- ADA111341
Entities
People
- T. A. Detemple
Organizations
- University of Illinois Urbana–Champaign