10.6 Micron Parametric Frequency Converter
Abstract
Resonantly enhanced, single-sideband generation in a Stark tunable gas has been demonstrated, both theoretically and experimentally, for the first time. The theory was developed first; it predicted the possibility of parametric mixing of infrared and microwave radiation in deuterated ammonia (N14H2D) gas, which would result in down converted single-sideband radiation at the difference frequency. Quantitative prediction of the nonlinear effect was made and is contained in the expression for the induced nonlinear coefficient. Pressure and doppler broadening effects were accounted for in the coefficient. Successful experimental demonstration of resonantly enhanced, parametric single- sideband generation in N14H2D gas was made for the first time on this contract during October 1975. The P(20) line at 10.591 micrometers of the C12O216 laser and microwave at 4.023 GHz were mixed in a microwave-optical Stark cell, yielding a newly generated downconverted wave at 10.593 micrometers, or 944.061/ cm. The dependences of the sideband signal on gas pressure, microwave frequency, applied dc field, and microwave power were measured and completely confirmed the theoretical predictions. A second experiment demonstrating resonantly enhanced parametric upconversion in Stark gas was also performed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1976
- Accession Number
- ADA035040
Entities
People
- C. K. Asawa
- R. L. Abrams
Organizations
- HRL Laboratories