A THEORY OF HIGH FREQUENCY LASER-INDUCED INSTABILITIES IN GASES.
Abstract
A theory is presented which treats the problem of high frequency instabilities generated in a gas by laser radiation. Transport processes enhanced by sound pumping of low-lying rotational and vibrational states contribute to a strong high frequency dispersion in carbon dioxide and air. For a light-absorption power-product (alpha P)Mw/cu cm, the gain lengths of the most unstable modes in CO2 and air are L-CO2=0.33(alpha P) to the -1/2 power, L-air = 0.1(alpha P) to the -1/2 power. The result shown for air is several orders of magnitude smaller than previously reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1967
- Accession Number
- AD0664487
Entities
People
- Peter M. Livingston
Organizations
- Institute for Defense Analyses