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Iodine photodissociation laser with plasma mirror

Published online by Cambridge University Press:  09 March 2009

J. Schmiedberger  and
M. Vrbová
J. Schmiedberger
Affiliation:
Institute of Physics, Czechoslovak Acad. Sci., Na Slovance 2, 180 40 Prague 8, Czechoslovakia
M. Vrbová
Affiliation:
Faculty of Nucl. Sci. and Phys. Engineering, Czech Tech. University, Břehová 7, 115 19 Prague, 1, Czechoslovakia
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Abstract

First experimental results with a pulsed iodine photodissociation laser controlled by target plasma reflectivity are reported. One of the laser mirrors is substituted for a focusing lens and a solid tilted target is located in its focal region. The laser dynamics depends on the geometry of the set-up. Laser pulse durations from 200 to 5 ns were observed if the resonator length was changed from 2 to 5 meters. Simultaneous mode-locking and Q-switching took place if the resonators were longer than 3 meters. Peak power densities of up to 1011 W/cm2 on the target and about a 1 per cent plasma reflectivity, increasing with increasing power density, were measured. A theoretical explanation of the laser behaviour and a comparison of our observations with previous results obtained with TEA-CO2 and Nd-glass amplifiers are presented.

Type
Research Article
Information
Laser and Particle Beams , Volume 4 , Issue 3-4 , August 1986 , pp. 427 - 433
Copyright
Copyright © Cambridge University Press 1986

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