Inhomogeneous Broadening Effects in Cw Chemical Lasers.
Abstract
The effects of inhomogeneous broadening on the performance of cw chemical lasers are investigated. A simple two-level vibrational model and a Fabry-Perot resonator are assumed. Laser performance is found to depend on certain parameters. Numerical results are presented for a cw chemical laser with laminar diffusion and with a single longitudinal optical mode. The variation of differential number density and local lasing intensity with streamwise distance and the variation of net laser output power with tuning frequency are presented. The latter exhibits a Lamb dip near linee center, which is in agreement with experimental observations. Thus, in typical devices, inhomogeneous broadening effects become negligible for p > or = O(10) Torr. These effects become important in single longitudinal model lasers operating in the regime p (Torr) < or = O(1) and in lasers wherein the streamwise length of the resonator is short compared with the streamwise length of the positive gain region.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 28, 1979
- Accession Number
- ADA077319
Entities
People
- Harold Mirels
Organizations
- The Aerospace Corporation