Population Inversion Of ARII Laser Levels In The Hollow Cathode He-Ar Discharge

P. Pramatarov; M. Stefanova; Y. Pacheva

doi:10.1117/12.942456

18 January 1985 Population Inversion Of ARII Laser Levels In The Hollow Cathode He-Ar Discharge

P. Pramatarov, M. Stefanova, Y. Pacheva

Proceedings Volume 0473, Symposium Optika '84; (1985) https://doi.org/10.1117/12.942456
Event: Symposium Optika '84, 1984, Budapest, Hungary

Abstract

The population of the upper laser level 4p2P3/2 of Ar11476A laser line and the triplet metastable helium atoms density are measured in a pulsed hollow cathode He-Ar discharge. The discharge tube is a "transverse" segmented type with a 6 mm inner cathode diameter. Helium pressure varies from 8 to 20 Torr while the Argon pressure - from 0,5 to 1,5 Torr. The discharge current density varies from 50 to 250 mA/cm2. The balance equation of the upper and lower laser levels and the ground state of Ar ion are qorked out for the pulse and the afterglow. Cross section value for the excitation transfer process from a helium triplet metastable atom He(23S1) to a ground state argon ion Arll is estimated. The processes leading to inversion population between the upper and lower laser levels are investigated.

Citation Download Citation

P. Pramatarov, M. Stefanova, and Y. Pacheva "Population Inversion Of ARII Laser Levels In The Hollow Cathode He-Ar Discharge", Proc. SPIE 0473, Symposium Optika '84, (18 January 1985); https://doi.org/10.1117/12.942456

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