The magnitudes of the laser pulse induced perturbations in the cavity gas are quantified as a function of system parameters. The conditions for which linear acoustic theory, non-linear acoustic theory, and shock gasdynamic theory represent accurate descriptions of these thermally driven acoustic phenomena are delineated. For gas flowing through a laser cavity, expressions are presented which relate instantaneous perturbations of local velocity to those of density. These cover both acoustical disturbances and hydrodynamic events such as turbulence. The non-flow limit is also examined.

Date Published: 1 February 1991
PDF: 6 pages
Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); doi: 10.1117/12.25983

Published in SPIE Proceedings Vol. 1397:
8th Intl Symp on Gas Flow and Chemical Lasers
Concepcion Maroto Domingo; Jose M. Orza, Editor(s)