We report time-resolved spectroscopic analysis of laser-produced plasma x-ray sources. Plasmas produced by a 400-fs 1-TW tabletop laser are characterized with a transmission grating spectrometer coupled to a soft-x-ray streak camera. Soft-x-ray radiation in the 1–6-nm range with durations of 2–7 ps is observed for copper and tantalum plasmas. The effect of incident laser energy on the x-ray pulse duration is also investigated.
© 1996 Optical Society of America
J. F. Pelletier, M. Chaker, and J. C. Kieffer, "Picosecond soft-x-ray pulses from a high-intensity laser-plasma source," Opt. Lett. 21, 1040-1042 (1996)