Long Wavelength Modulation Techniques (10.6 Microns).
Abstract
This program is an exploratory study, involving both a theoretical and experimental analysis, whose principal goal is to identify an optimum modulation technique for intensity modulation of a 10.6 micrometers CO2 laser. In addition to requirements of minimum driver power burden, the technique so identified must have a minimum frequency response of 200 MHz and show clear capability of extension to 1 GHz. During this report period a comprehensive review of all known techniques applicable to CO2 laser modulation was undertaken. Included in this study were: the electro-optic effect, Stark effect, acousto-optic effect, and a number of processes broadly classified under free-carrier effects. In addition, a substantial effort was initially devoted to exploring novel, specialized, innovative techniques not otherwise available in the literature. The study involved a two-stage elimination process. The frequency response capabilities of all techniques were assessed, and those possessing inherent limitations well below 200 MHz were identified and eliminated from further consideration.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 22, 1971
- Accession Number
- AD0894036
Entities
People
- A. E. Popa
- J. E. Kiefer
- J. F. Lotspeich
Organizations
- HRL Laboratories