Source Flow Effect on Lineshape
Abstract
The effect of particle motion on spectral lineshape (i.e., Doppler broadening) is usually evaluated by assuming that the particles have a random thermal motion. In high-speed gas-flow lasers, of which chemical lasers are an example, the working fluid may have significant mean velocities as well as random velocities in the optical path direction. In these cases, it is necessary to take the mean motion into account when evaluating the spectral lineshape. The effect of a source flow on Doppler-broadened lineshape is evaluated herein for the case where radiation is perpendicular to the source flow axis. The application to a cw chemical laser is then noted.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1981
- Accession Number
- ADA103835
Entities
People
- Harold Mirels
Organizations
- The Aerospace Corporation