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Proceedings Paper

Investigation of microwave-pumped excimer and rare-gas laser transitions
Author(s): Hans Hermann Klingenberg; Frank Gekat
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Paper Abstract

Rare-gas halide gas mixtures such as helium, xenon and hydrogen-chloride were investigated using L-band microwave excitation techniques. For the experiments a magnetron generator with a pulsed power of 2.5 MW, a pulse duration of 4 microsecond(s) and a repetition frequency of 10 Hz, a klystron transmitter with a pulsed power of 10 MW, a variable pulse duration from 500 to 6000 ns, and a maximum repetition frequency of 430 Hz were applied. In a gas mixture consisting of He/Xe/HCl equals 1000/10/0,5 at a total pressure of 1 bar two laser transitions were observed to operate simultaneously. One in the UV, i.e. the XeCl laser, and the second in the IR, i.e. the Xe laser at 2.03 micrometers . It was found the HCl content is important for the Xe laser performance. Up to a factor of 5, more IR laser pulse energy was measured when the HCl concentration of the mixture was optimized. For both lasers almost the same pulse energies were obtained, 15 (mu) J respectively. The pulse duration was 65 ns for the UV and 150 ns for the IR laser. In all experiments the discharge tube had an inner diameter of 2.6 mm and an outer diameter of 10.3 mm. The excited discharge length was 438 mm. However, when a larger cross-section of the discharge tube was chosen, a maximum UV pulse energy of 1.8 mJ in a 16 ns long pulse was obtained.

Paper Details

Date Published: 1 May 1991
PDF: 12 pages
Proc. SPIE 1412, Gas and Metal Vapor Lasers and Applications, (1 May 1991); doi: 10.1117/12.43639
Show Author Affiliations
Hans Hermann Klingenberg, DLR-Institut fuer Technische Physik (Germany)
Frank Gekat, DLR-Institut fuer Technische Physik (Germany)

Published in SPIE Proceedings Vol. 1412:
Gas and Metal Vapor Lasers and Applications
Jin J. Kim; Frank K. Tittel, Editor(s)

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