16 May 1994 Soft x-ray pulse-length measurement by pump-probe absorption spectroscopy
Author Affiliations +
Abstract
We have demonstrated a system for subpicosecond, soft-x-ray continuum, pump-probe absorption spectroscopy. Using multiphoton ionization to abruptly change the x-ray absorption spectra of a gas, we have measured the temporal profile of laser-generated x-ray pulses near 90 eV. Although the x-ray pulses from a laser-generated plasma here were only as short as approximately 20 psec, the technique is extendible to higher energy x rays that will have pulse durations approaching 100 fsec. We also present the absorption spectrum of Kr ions produced under conditions of high intensity non-resonant multiphoton ionization. The spectra are identified with a fit to the Cowan code.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Harry W.K. Tom, Harry W.K. Tom, Mark Sher, Mark Sher, Umar Mohideen, Umar Mohideen, Obert R. Wood, Obert R. Wood, Gary D. Aumiller, Gary D. Aumiller, Thomas J. McIlrath, Thomas J. McIlrath, Jeffrey Bokor, Jeffrey Bokor, Richard R. Freeman, Richard R. Freeman, Jack Sugar, Jack Sugar, } "Soft x-ray pulse-length measurement by pump-probe absorption spectroscopy", Proc. SPIE 2116, Generation, Amplification, and Measurement of Ultrashort Laser Pulses, (16 May 1994); doi: 10.1117/12.175870; https://doi.org/10.1117/12.175870
PROCEEDINGS
11 PAGES


SHARE
Back to Top