THE DETECTION OF TURBINE WHEEL TEMPERATURES BY INFRARED RADIATION INSTRUMENTATION.
Abstract
Frequency mixing and harmonic generation effects due to nonlinear magnetic or electric suscepti bilities, as observed at optical frequencies with high-power laser beams, can be performed at rel atively low-power levels in the millimeter-wave region, if all mixing frequencies coincide or are very close to quantum-mechanical resonances of the mixing medium. This report presents a theoretical analysis of power-conversion efficien cies for a totally resonant third-harmonic generation, where both the fundamental frequency and the third-harmonic frequency coincide or are very close to the resonances of an equidistant four-level scheme. The results are compared with previous investigations of partly resonant third harmonic generation, where only the harmonic fre quency is close to a quantum-mechanical resonance of the mixing medium. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1963
- Accession Number
- AD0426917
Entities
People
- Paul W. Montgomery
Organizations
- Oklahoma State University–Stillwater