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Proceedings Paper

Focusing system of multiterawatt laser facility (PROGRESS-P)
Author(s): Victor N. Chernov; Vladimir G. Borodin; Alexander V. Charukchev; Vladimir A. Malinov; Vaycheslav M. Migel; Nikolai V. Nikitin; I. G. Rozivika
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Paper Abstract

Focusing of multiterawatt laser beams is of particular importance for super strong field experiments. The parameters of focusing system of 30-TW Nd: glass laser facility PROGRESS-P with chirped pulse amplification and result of experimental investigations of laser beam propagation through this system are presented. Near diffraction-limited beam quality is obtained at output laser amplifier chain by use of the low-thermal phosphate Nd:glass and high quality optical elements. Output 180 mm beam is compressed to 1.5 ps using two holographic gratings with dimensions 420 X 210 mm, injected in target chamber through the LiF-window with low nonlinear refractive index coefficient and focused to targets by means developed f/1.1 on-axis parabolic mirror with focal length of 200 mm. Over 50 percent energy is obtained in 6-7 micrometers focal spot in target chamber for low power beam. Determination of the focal spot dimensions for 10 TW beam from x-ray plasma image show that microspot diameter not exceeds 7 micrometers .

Paper Details

Date Published: 30 December 1998
PDF: 4 pages
Proc. SPIE 3683, Laser Optics '98: Superstrong Laser Fields and Applications, (30 December 1998); doi: 10.1117/12.334801
Show Author Affiliations
Victor N. Chernov, S.I. Vavilov State Optical Institute (Russia)
Vladimir G. Borodin, S.I. Vavilov State Optical Institute (Russia)
Alexander V. Charukchev, S.I. Vavilov State Optical Institute (Russia)
Vladimir A. Malinov, S.I. Vavilov State Optical Institute (Russia)
Vaycheslav M. Migel, S.I. Vavilov State Optical Institute (Russia)
Nikolai V. Nikitin, S.I. Vavilov State Optical Institute (Russia)
I. G. Rozivika, S.I. Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 3683:
Laser Optics '98: Superstrong Laser Fields and Applications
Alexander A. Andreev, Editor(s)

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