Multiline multimode c-w (continuous-wave) chemical laser performance. Technical report

Technical Report · Sat Jul 01 04:00:00 EDT 1989

OSTI ID:5571970

Mirels, H

Effects of translational rotational nonequilibrium large-scale c-w chemical laser performance are evaluated for the case of a Fabry-Perot resonator with multiple longitudinal modes. Numerical results are presented for the limit Delta nu Sub c << Delta nu sub h << Delta nu sub d, where Delta nu sub c, Delta nu sub h, and Delta nu sub d denote longitudinal mode separation, homogeneous width, and Doppler width, respectively. Results include the effect of threshold gain on the power in each longitudinal mode, the power associated with each rotational energy level, and the net laser power. In the case of a saturated laser, an increase of threshold gain results in an increase in the output from strong rotational transitions at the expense of the output from weak rotational transitions. Total output is reduced. With further increase of threshold gain, the output from all rotational transitions is reduced. The case of rotational nonequilibrium and translational equilibrium is also considered. The latter case, a common assumption, is shown to provide net output power that is intermediate between the values for rotational and translational equilibrium and for rotational and translational nonequilibrium.

• Research Organization: Aerospace Corp., El Segundo, CA (USA). Aerophysics Lab.
• OSTI ID: 5571970
• Report Number(s): AD-A-210613/6/XAB; TR--0088(3907)-1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
CAVITY RESONATORS
CHEMICAL LASERS
COST
DIMENSIONS
DOCUMENT TYPES
DOPPLER EFFECT
ELECTRONIC EQUIPMENT
ENERGY LEVELS
EQUIPMENT
FABRY-PEROT INTERFEROMETER
GAIN
INTERFEROMETERS
LASERS
MATHEMATICS
MEASURING INSTRUMENTS
MOLECULES
MOTION
NUMERICAL ANALYSIS
PERFORMANCE
PROGRESS REPORT
RESONATORS
ROTATION
WIDTH