Quantitative study of the ionization-induced refraction of picosecond laser pulses in gas-jet targets

被引:36
作者
Mackinnon, AJ
Borghesi, M
Iwase, A
Jones, MW
Pert, GJ
Rae, S
Burnett, K
Willi, O
机构
[1] YORK UNIV,YORK,N YORKSHIRE,ENGLAND
[2] UNIV OXFORD,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND
关键词
D O I
10.1103/PhysRevLett.76.1473
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A quantitative study of refractive whole beam defocusing and small scale breakup induced by optical ionization of subpicosecond and picosecond, 0.25 and 1 mu m, laser pulses in gas-jet targets at densities above 1 x 10(19) cm(-3) has been carried out. A significant reduction of the incident laser intensity was observed due to refraction from ionization-induced density gradients. The level of refraction measured with optical probing correlated well with the fraction of energy transmitted through the plasma. The numerical and analytical models were found to agree well with experimental observations.
引用
收藏
页码:1473 / 1476
页数:4
相关论文
共 19 条
[1]  
AMMOSOV MV, 1987, SOV PHYS JETP, V64, P1191
[2]  
August S., 1989, PHYS REV LETT, V63, P2212
[3]   LASER IONIZATION AND HEATING OF GAS TARGETS FOR LONG-SCALE-LENGTH INSTABILITY EXPERIMENTS [J].
DENAVIT, J ;
PHILLION, DW .
PHYSICS OF PLASMAS, 1994, 1 (06) :1971-1984
[4]   EXPERIMENTAL-OBSERVATIONS OF THE EXPANSION OF AN OPTICAL-FIELD-INDUCED IONIZATION CHANNEL IN A GAS-JET TARGET [J].
DUNNE, M ;
AFSHARRAD, T ;
EDWARDS, J ;
MACKINNON, AJ ;
VIANA, SM ;
WILLI, O ;
PERT, G .
PHYSICAL REVIEW LETTERS, 1994, 72 (07) :1024-1027
[5]   LIGHT PIPE FOR HIGH-INTENSITY LASER-PULSES [J].
DURFEE, CG ;
MILCHBERG, HM .
PHYSICAL REVIEW LETTERS, 1993, 71 (15) :2409-2412
[6]   OPTICAL-FIELD-IONIZED PLASMA X-RAY LASERS [J].
EDER, DC ;
AMENDT, P ;
WILKS, SC .
PHYSICAL REVIEW A, 1992, 45 (09) :6761-6772
[7]   FOCUSING LIMITS OF ULTRASHORT LASER-PULSES - ANALYTICAL THEORY [J].
FILL, EE .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (11) :2241-2245
[8]  
JAHODA FC, 1971, PLASMA PHYSICS B, V9, P1
[9]   NONCOHERENT METHOD FOR MAPPING PHASE OBJECTS [J].
KAFRI, O .
OPTICS LETTERS, 1980, 5 (12) :555-557
[10]   NON-LINEAR INVERSE BREMSSTRAHLUNG AND HEATED-ELECTRON DISTRIBUTIONS [J].
LANGDON, AB .
PHYSICAL REVIEW LETTERS, 1980, 44 (09) :575-579