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Research on the development of a method of spatially temporary smoothing of a high-power laser beam

Published online by Cambridge University Press:  01 October 1999

V.N. DERKACH
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
S.V. BONDARENKO
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
S.G. GARANIN
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
A.I. GROMOV
Affiliation:
Lebedev Physical Institute, Moscow, Russia
S.J. GUS'KOV
Affiliation:
Lebedev Physical Institute, Moscow, Russia
G.A. KIRILLOV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
J.F. KIR'YANOV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
G.G. KOCHEMASOV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
A.G. KRAVCHENKO
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
T.E. LYBUNSKAYA
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
J.A. MERKUL'EV
Affiliation:
Lebedev Physical Institute, Moscow, Russia
G.P. OKUTIN
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
S.I. PETROV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
N.N. RUKAVISHNIKOV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
N.A. SUSLOV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia
S.A. SUKHAREV
Affiliation:
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, 607190, Prospect Mira 37, Sarov, Nizhni Novgorod Region, Russia

Abstract

The investigations of the influence of various types of wavefront distortions, varying in time, on the intensity distribution on the surface of a target are carried out. It is shown that distortions of a wavefront, equivalent to transverse displacement in time of a beam in far field at an angle of approximately 10 diffraction angles, results in practically full smoothing of a specl-structure of intensity distribution. Creation of phase distortions of a beam assigned as running in a cross section wave with an amplitude of more than 3 radian and with a spatial size exceeding 20–30 times the size of the kinoform phase plate element, permits us to reduce the depth of modulation in distribution of intensity in far field also. The capability of application is considered as a smoothing device of the dynamic plasma layer, based on the volume-structured medium. The model of energy transport process in such media is developed. Matching of calculation and experimental results is conducted.

Type
Research Article
Copyright
1999 Cambridge University Press

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