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Proceedings Paper

On The Time Behavior Of The Small-Signal Gain Coefficient In A TEA CO[sub]2[/sub]-Laser With UV Spark Preionization
Author(s): H. Albrecht
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Paper Abstract

The time behavior of the small-signal gain g0 of TE CO2-laser amplifiers is investigated for different CO2:N2 laser gas mixtures. It is found that two different decay times T1 and T2 for g0 occur. whereas T2 is in agree with known relaxation rates T1 describes a much more faster-decay process immediately after g0 maximum. T1 decreases abrupt with increasing input energy density and represents a new gain limitation. The g0 rise is caused by the vibrational energy transfer from nitrogen. The influence of He on the g0 rise by V-T relaxation of the V2-mode can be neglected.

Paper Details

Date Published: 20 June 1989
PDF: 5 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989);
Show Author Affiliations
H. Albrecht, Central Institute of Optics and Spectroscopy of the Academy of Sciences of the GDR, (Germany)

Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers
Dieter Schuoecker, Editor(s)

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