On The Time Behavior Of The Small-Signal Gain Coefficient In A TEA CO[sub]2[/sub]-Laser With UV Spark Preionization

H. Albrecht

doi:10.1117/12.950528

20 June 1989 On The Time Behavior Of The Small-Signal Gain Coefficient In A TEA CO₂-Laser With UV Spark Preionization

H. Albrecht

Proceedings Volume 1031, 7th Intl Symp on Gas Flow and Chemical Lasers; (1989) https://doi.org/10.1117/12.950528
Event: 7th International Symposium on Gas Flow and Chemical Lasers, 1988, Vienna, Austria

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.

Citation Download Citation

H. Albrecht "On The Time Behavior Of The Small-Signal Gain Coefficient In A TEA CO₂-Laser With UV Spark Preionization", Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); https://doi.org/10.1117/12.950528

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