Accession Number : AD0893065

Title :   Laser Mode Control and Nonlinear Optics.

Descriptive Note : Final rept. 1 Aug 68-30 Nov 71,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Carruthers, J. A. ; Collins, R. J.

Report Date : OCT 1971

Pagination or Media Count : 162

Abstract : Results are reported for work on coupled optical resonators, laser amplitude noise, phase locking, and nonlinear interactions. The propagation characteristics for low intensity pulses in the active gain medium of a laser have been studied both experimentally and theoretically. The pulse velocity is very nearly equal to the classical group velocity dw/dk, and is less than c for a gain medium and greater than c for a resonant absorber. In a self-locked laser there is a small gain fluctuation associated with the pulses which results in a fluctuating dispersion, and hence a smaller group velocity at the front of the pulse than at the back. This time-dependent group velocity helps to stabilize the shape. (Author)

Descriptors :   (*LASERS, LIGHT PULSES), (*COHERENT RADIATION, FREQUENCY MULTIPLIERS), OPTICAL PUMPING, LITHIUM COMPOUNDS, NIOBATES, NONLINEAR SYSTEMS, HARMONIC ANALYSIS, GAIN, CAVITY RESONATORS.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE