Temporal characterization of a picosecond-laser-pumped x-ray laser for applications

Compact soft x-ray laser sources are now used routinely for various applications primarily because of their high repetition rate, high photon fluence and short pulse duration characteristics. For some of these applications, for example interferometry of high density laser-produced plasmas, longer optical drive pulses, 6 - 13 ps (FWHM), have been implemented to maximize the x-ray output and coherence. It is therefore important to know the x-ray laser pulse length, shape and repeatability for these specific experiments as a baseline measurement but also to better understand the temporal behavior as a function of the pumping conditions in general. We report a detailed temporal characterization of the picosecond-driven 14.7 nm Ni-like Pd ion x-ray laser on the Compact Multipulse Terawatt (COMET) laser at LLNL using an ultrafast x-ray streak camera measurement of a horizontal slice of the near-field x-ray laser pattern. This is measured as a function of the chirped pulse amplification pumping laser conditions, including varying the pump pulse from 0.5 - 27 ps (FWHM), varying the plasma column length as well as investigating traveling wave (TW) and non-TW irradiation conditions.

[1]  O Peyrusse,et al.  Heating of thin foils with a relativistic-intensity short-pulse laser. , 2002, Physical review letters.

[2]  M. Kishimoto,et al.  Picosecond snapshot of the speckles from ferroelectric BaTiO3 by means of x-ray lasers. , 2002, Physical review letters.

[3]  Annie Klisnick,et al.  Measurement of the duration of X-ray lasing pumped by an optical laser pulse of picosecond duration , 2003 .

[4]  J. Kuba,et al.  Demonstration of a 2-ps transient x-ray laser , 2002 .

[5]  Nilsen,et al.  Prepulse technique for producing low-Z Ne-like x-ray lasers. , 1993, Physical review. A, Atomic, molecular, and optical physics.

[6]  James Dunn,et al.  Saturated output tabletop X-ray lasers , 2001 .

[7]  Vyacheslav N. Shlyaptsev,et al.  Tabletop x-ray laser pumped with subnanosecond and picosecond pulses , 1994, Optics & Photonics.

[8]  William E. White,et al.  Demonstration of X-Ray Amplification in Transient Gain Nickel-like Palladium Scheme , 1998 .

[9]  Vyacheslav N. Shlyaptsev,et al.  Short Pulse X-Ray Laser at 32.6 nm Based on Transient Gain in Ne-like Titanium , 1997 .

[10]  Y. Afanas’ev,et al.  INTERACTION OF LASER RADIATION WITH MATTER. LASER PLASMAS: Formation of a population inversion of transitions in Ne-like ions in steady-state and transient plasmas , 1989 .

[11]  T W Barbee,et al.  Picosecond x-ray laser interferometry of dense plasmas. , 2002, Physical review letters.

[12]  Joseph Nilsen,et al.  Near‐Field Spatial Imaging and Time‐Resolved Measurements of the Ni‐like Palladium Soft X‐Ray Laser , 2002 .

[13]  Ralph Kalibjian.  Space-Charge Temporal Broadening Effects In Streak-Camera Tubes , 1979, Other Conferences.

[14]  Troy W. Barbee,et al.  Demonstration of saturation in a Ni-like Ag x-ray laser at 14 nm , 1997 .

[15]  Nilsen,et al.  Gain saturation regime for laser-driven tabletop, transient Ni-like ion X-Ray lasers , 2000, Physical review letters.

[16]  Roger W. Falcone,et al.  X‐ray streak camera with 2 ps response , 1990 .

[17]  John Liesegang,et al.  Soft-x-ray-induced secondary-electron emission from semiconductors and insulators: Models and measurements , 1979 .

[18]  Annie Klisnick,et al.  Full characterization of a high-gain saturated x-ray laser at 13.9 nm , 2000 .