Accession Number:

AD0647614

Title:

RESEARCH INVESTIGATION OF LASER LINE PROFILES

Descriptive Note:

Semiannual rept. 1 Aug 1966-31 Jan 11967

Corporate Author:

UNITED AIRCRAFT RESEARCH LABS EAST HARTFORD CT

Report Date:

1967-02-27

Pagination or Media Count:

40.0

Abstract:

Some aspects of the theory of a gas laser recently developed by W. E. Lamb, Jr. are recast in a form which more fully displays the role played by the particle dynamics. The Wigner distribution function is used to derive kinetic equations which govern the external center of mass motion of the two-level system as well as their internal dynamics. The effect of long range forces is discussed by treating the collision integral in a manner similar to that employed in plasma kinetic theory. A modification in the criterion for the existence of a dip in the output is obtained. It is also shown that effects due to long range forces are most noticeable at long optical wavelengths and when there is a large difference between the lifetimes of the two laser levels. The experimental system for measuring the line profile of a dc excited argon laser was designed, constructed, and made operative. Preliminary data on the Lamb Dip of an argon ion laser was obtained as a function of pressure and excitation.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE