Experimental and theoretical study of CW hydrogen fluoride chemical laser residual fundamental gain

A new technique that uses a multi-line probe beam to measure the gain on several lines simultaneously was developed. This new technique was used to measure the gains of the peak fundamental lines P$\sb1$ (4-9) and P$\sb2$(4-9) while lasing on the overtone, for three levels of media saturation. The suppression of the fundamental gains obtained at relatively high media saturation with 99.7/99.7% reflective mirrors was essentially the same as that obtained with 55% higher intracavity flux with 99.8/99.86% reflective mirrors. The gains of the low J lines P$\sb1$(4-6) and P$\sb2$(4-6) were suppressed 41% to 84%; the gains of the high J lines P$\sb1$(7-9) and P$\sb2$(7-9) were suppressed 3% to 43%. The 1 $\to$ 0 lines were suppressed more than the 2 $\to$ 1 lines. The maximum suppression occurred between 2 and 6 mm downstream from the nozzle exit plane, near the center of the 9 mm overtone beam.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Aerospace Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Theodoropoulos, Panagiotis Theodoros

Contributors dc:contributor

• Sentman, Lee H.

• Engineering, Aerospace

Statement dc:rights

• Copyright 1992 Theodoropoulos, Panagiotis Theodoros

Language dc:language

eng

Identifier

AAI9236606
(UMI)AAI9236606

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20805