Plasma kinetics issues for repetition rate scaling of kinetically enhanced copper vapor lasers

Robert J. Carman; Richard P. Mildren; James A. Piper; G. D. Marshall; David W. Coutts

doi:10.1117/12.414053

25 January 2001 Plasma kinetics issues for repetition rate scaling of kinetically enhanced copper vapor lasers

Robert J. Carman, Richard P. Mildren, James A. Piper, G. D. Marshall, David W. Coutts

Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.414053
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy

Abstract

The performance of a small-scale KE-CVL operating at a pulse repetition rate of 50kHz has been investigated by comparing modelling results and experimental data to understand the underlying plasma kinetics issues for pulse repetition rate scaling. Comparison between initial modelling predictions and experimental results relating to the laser output power and the population densities of the metastable lower laser levels (Cu* 4s2 2D3/2,5/2 ) suggests that there is an additional de-excitation mechanism for the metastables in the KE-CVL. The most likely de-excitation mechanism involves vibrationally-excited H2(v) molecules Cu*2D+H2(v) => CuH+H. A rate-coefficient of 2x10-16m3s1 is obtained by comparing modelling results with experimental data relating to the laser output power and the time-evolution of the axial 2D3/2 metastable population density.

Citation Download Citation

Robert J. Carman, Richard P. Mildren, James A. Piper, G. D. Marshall, and David W. Coutts "Plasma kinetics issues for repetition rate scaling of kinetically enhanced copper vapor lasers", Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); https://doi.org/10.1117/12.414053

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