Pulsed discharge production Ar* metastables

Jiande Han; Michael C. Heaven; Daniel Emmons; Glen P. Perram; David E. Weeks; William F. Bailey

doi:10.1117/12.2218122

22 April 2016 Pulsed discharge production Ar* metastables

Jiande Han, Michael C. Heaven, Daniel Emmons, Glen P. Perram, David E. Weeks, William F. Bailey

Proceedings Volume 9729, High Energy/Average Power Lasers and Intense Beam Applications IX; 97290D (2016) https://doi.org/10.1117/12.2218122
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

The production of relatively high densities of Ar* metastables (>10¹² cm^-3) in Ar/He mixtures, at total pressures close to 1 atm, is essential for the efficient operation of an optically pumped Ar* laser. We have used emission spectroscopy and diode laser absorption spectroscopy measurements to observe the production and decay of Ar* in a parallel plate pulsed discharge. With discharge pulses of 1 μs duration we find that metastable production is dominated by processes occurring within the first 100 ns of the gas break-down. Application of multiple, closely spaced discharge pulses yields insights concerning conditions that favor metastable production. This information has been combined with time-resolved measurements of voltage and current. The experimental results and preliminary modeling of the discharge kinetics are presented.

Citation Download Citation

Jiande Han, Michael C. Heaven, Daniel Emmons, Glen P. Perram, David E. Weeks, and William F. Bailey "Pulsed discharge production Ar* metastables", Proc. SPIE 9729, High Energy/Average Power Lasers and Intense Beam Applications IX, 97290D (22 April 2016); https://doi.org/10.1117/12.2218122

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