EVIDENCE FOR WHOLE-BEAM SELF-FOCUSING OF INDUCED SPATIALLY INCOHERENT LASER-LIGHT IN LARGE UNDERDENSE PLASMA

被引：21

作者：

AFSHARRAD, T ^{[1
]}

GIZZI, LA ^{[1
]}

DESSELBERGER, M ^{[1
]}

KHATTAK, F ^{[1
]}

WILLI, O ^{[1
]}

GIULIETTI, A ^{[1
]}

机构：

[1] IST FIS ATOM & MOLEC,PISA,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.68.942

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The propagation of an intense electromagnetic pulse in a large underdense plasma has been investigated using spatially and temporally incoherent laser light. Spatial incoherence was obtained using the induced spatial incoherence (ISI) technique. The first observation of the occurrence of thermal whole-beam self-focusing with ISI laser light is presented. Thermal imaging with a multiframe x-ray camera (140 ps gate time) was used to record the propagation characteristics of the interaction beam through the plasma. A direct measurement of the self-focusing growth length has been made.

引用

页码：942 / 945

页数：4

共 18 条

[1] AFSHARRAD T, UNPUB
[2] SUPPRESSION OF INSTABILITIES IN A LONG-SCALELENGTH PREFORMED PLASMA
COE, SE
AFSHARRAD, T
DESSELBERGER, M
KHATTAK, F
WILLI, O
GIULIETTI, A
LIN, ZQ
YU, W
DANSON, C
[J]. EUROPHYSICS LETTERS, 1989, 10 (01): : 31 - 36
[3] EXPERIMENTAL-OBSERVATIONS OF THERMAL WHOLE BEAM SELF-FOCUSING
COE, SE
AFSHARRAD, T
WILLI, O
[J]. EUROPHYSICS LETTERS, 1990, 13 (03): : 251 - 256
[4] INFLUENCE OF NONUNIFORM LASER INTENSITIES ON ABLATIVELY ACCELERATED TARGETS
EMERY, MH
ORENS, JH
GARDNER, JH
BORIS, JP
[J]. PHYSICAL REVIEW LETTERS, 1982, 48 (04) : 253 - 256
[5] KINETIC-THEORY OF LASER FILAMENTATION IN PLASMAS
EPPERLEIN, EM
[J]. PHYSICAL REVIEW LETTERS, 1990, 65 (17) : 2145 - 2148
[6] 2-DIMENSIONAL RAY-TRACE CALCULATIONS OF THERMAL WHOLE BEAM SELF-FOCUSING
ESTABROOK, K
KRUER, WL
BAILEY, DS
[J]. PHYSICS OF FLUIDS, 1985, 28 (01) : 19 - 21
[7] ONSET OF LASER-LIGHT FILAMENTATION IN PREFORMED PLASMAS
HAVAZELET, D
CAPJACK, CE
SHVARTS, D
MARCHAND, R
[J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1989, 1 (04): : 893 - 900
[8] SELF-FOCUSING AND FILAMENTATION OF LASER-LIGHT IN HIGH Z-PLASMAS
JONES, RD
MEAD, WC
COGGESHALL, SV
ALDRICH, CH
NORTON, JL
POLLAK, GD
WALLACE, JM
[J]. PHYSICS OF FLUIDS, 1988, 31 (05) : 1249 - 1272
[9] KAFRI O, 1985, APPL OPTICS, V24, P2746
[10] USE OF INDUCED SPATIAL INCOHERENCE FOR UNIFORM ILLUMINATION OF LASER FUSION-TARGETS
LEHMBERG, RH
OBENSCHAIN, SP
[J]. OPTICS COMMUNICATIONS, 1983, 46 (01) : 27 - 31

← 1 2 →