Dye laser absorption probing of high-current pulsed volume discharge in argon

Alexey B. Treshchalov; Alexander A. Lissovski

doi:10.1117/12.677439

31 May 2006 Dye laser absorption probing of high-current pulsed volume discharge in argon

Alexey B. Treshchalov, Alexander A. Lissovski

Proceedings Volume 6263, Atomic and Molecular Pulsed Lasers VI; 62630L (2006) https://doi.org/10.1117/12.677439
Event: Atomic and Molecular Pulsed Lasers VI, 2005, Tomsk, Russian Federation

Abstract

Homogeneous volume discharge in high-pressure (up to 10 bar) argon is studied as a possible active medium for Ar₂ VUV (126 nm) laser. Time dependences of the densities of Ar^* (4s, 4p), Ar₂^* 4sσ a³Σ_u⁺ (v=0) were measured by the pulse dye laser absorption probing of the discharge plasma. Experimentally obtained temporal dependencies of several excited species are compared with calculated ones. Strong optical dynamic aberrations in the discharge plasma are observed for the probing laser beam. Nonuniform distribution of the pumping power density in the transverse cross section of the discharge is the reason of free electrons gradient. These phase aberrations are caused by negative contribution of free electrons to the refraction index.

Citation Download Citation

Alexey B. Treshchalov and Alexander A. Lissovski "Dye laser absorption probing of high-current pulsed volume discharge in argon", Proc. SPIE 6263, Atomic and Molecular Pulsed Lasers VI, 62630L (31 May 2006); https://doi.org/10.1117/12.677439

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