Reduction of laser imprinting using polarization smoothing on a solid-state fusion laser

被引:223
作者
Boehly, TR [1 ]
Smalyuk, VA [1 ]
Meyerhofer, DD [1 ]
Knauer, JP [1 ]
Bradley, DK [1 ]
Craxton, RS [1 ]
Guardalben, MJ [1 ]
Skupsky, S [1 ]
Kessler, TJ [1 ]
机构
[1] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA
关键词
D O I
10.1063/1.369702
中图分类号
O59 [应用物理学];
学科分类号
摘要
We demonstrate a laser beam-smoothing technique known as polarization smoothing. A birefringent optical wedge splits the individual laser beams into two orthogonally polarized beams that, when coupled with a distributed phase plate, produce two speckle patterns shifted with respect to one another. This instantaneously reduces the on-target nonuniformity by a factor of root 2. We measured this reduction optically and its effect is demonstrated in laser-driven targets. (C) 1999 American Institute of Physics. [S0021-8979(99)06407-5].
引用
收藏
页码:3444 / 3447
页数:4
相关论文
共 19 条
[1]   Initial performance results of the OMEGA laser system [J].
Boehly, TR ;
Brown, DL ;
Craxton, RS ;
Keck, RL ;
Knauer, JP ;
Kelly, JH ;
Kessler, TJ ;
Kumpan, SA ;
Loucks, SJ ;
Letzring, SA ;
Marshall, FJ ;
McCrory, RL ;
Morse, SFB ;
Seka, W ;
Soures, JM ;
Verdon, CP .
OPTICS COMMUNICATIONS, 1997, 133 (1-6) :495-506
[2]   MEASUREMENTS OF THE EFFECT OF LASER-BEAM SMOOTHING ON DIRECT-DRIVE INERTIAL-CONFINEMENT-FUSION CAPSULE IMPLOSIONS [J].
BRADLEY, DK ;
DELETTREZ, JA ;
VERDON, CP .
PHYSICAL REVIEW LETTERS, 1992, 68 (18) :2774-2777
[3]   NONUNIFORMITY IMPRINT ON THE ABLATION SURFACE OF LASER-IRRADIATED TARGETS [J].
DESSELBERGER, M ;
AFSHARRAD, T ;
KHATTAK, F ;
VIANA, S ;
WILLI, O .
PHYSICAL REVIEW LETTERS, 1992, 68 (10) :1539-1542
[4]   HYDRODYNAMIC TARGET RESPONSE TO AN INDUCED SPATIAL INCOHERENCE-SMOOTHED LASER-BEAM [J].
EMERY, MH ;
GARDNER, JH ;
LEHMBERG, RH ;
OBENSCHAIN, SP .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1991, 3 (09) :2640-2651
[5]   RAYLEIGH-TAYLOR INSTABILITIES IN LASER-ACCELERATED TARGETS [J].
EVANS, RG ;
BENNETT, AJ ;
PERT, GJ .
PHYSICAL REVIEW LETTERS, 1982, 49 (22) :1639-1642
[6]   LASER-DRIVEN PLANAR RAYLEIGH-TAYLOR INSTABILITY EXPERIMENTS [J].
GLENDINNING, SG ;
WEBER, SV ;
BELL, P ;
DASILVA, LB ;
DIXIT, SN ;
HENESIAN, MA ;
KANIA, DR ;
KILKENNY, JD ;
POWELL, HT ;
WALLACE, RJ ;
WEGNER, PJ ;
KNAUER, JP ;
VERDON, CP .
PHYSICAL REVIEW LETTERS, 1992, 69 (08) :1201-1204
[7]   Measurements of direct drive laser imprint in thin foils by radiography using an x-ray laser backlighter [J].
Kalantar, DH ;
Key, MH ;
DaSilva, LB ;
Glendinning, SG ;
Remington, BA ;
Rothenberg, JE ;
Weber, F ;
Weber, SV ;
Wolfrum, E ;
Kim, NS ;
Neely, D ;
Zhang, J ;
Wark, JS ;
Demir, A ;
Lin, J ;
Smith, R ;
Tallents, GJ ;
Lewis, CLS ;
MacPhee, A ;
Warwick, J ;
Knauer, JP .
PHYSICS OF PLASMAS, 1997, 4 (05) :1985-1993
[8]  
Kato Y., 1984, UNPUB
[9]  
KATO Y, 1990, LAB LASER ENERGETICS, V45
[10]   A REVIEW OF THE ABLATIVE STABILIZATION OF THE RAYLEIGH-TAYLOR INSTABILITY IN REGIMES RELEVANT TO INERTIAL CONFINEMENT FUSION [J].
KILKENNY, JD ;
GLENDINNING, SG ;
HAAN, SW ;
HAMMEL, BA ;
LINDL, JD ;
MUNRO, D ;
REMINGTON, BA ;
WEBER, SV ;
KNAUER, JP ;
VERDON, CP .
PHYSICS OF PLASMAS, 1994, 1 (05) :1379-1389