High-average-power picosecond-pulse excimer laser system for x-ray generation

Michael F. Powers; Harry Shields

doi:10.1117/12.270098

31 March 1997 High-average-power picosecond-pulse excimer laser system for x-ray generation

Michael F. Powers, Harry Shields

Proceedings Volume 2992, Excimer Lasers, Optics, and Applications; (1997) https://doi.org/10.1117/12.270098
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

A high average power, picosecond pulse XeCl excimer laser system has been demonstrated. By using spatial filtering of the XeCl preamplifier, and by forming pulse bursts of 16 pulses with 2-ns pulse spacing, amplified spontaneous emission has been successfully suppressed in the output of the final amplifier stage. On average, each pulse in the burst is amplified to a level of 15 mJ, corresponding to approximately twice the saturation fluence for XeCl. Peak power in the picosecond pulses is 1.5 GW at 10 ps pulse duration, and the average power of the system is 68 W at 300 Hz burst repetition rate. These pulse bursts have been focused on a copper tape target to generate a laser-produced plasma which emits an x-ray power of 2 W into 2(pi) steradian solid angle, in a spectral band from 9-13 angstrom.

Citation Download Citation

Michael F. Powers and Harry Shields "High-average-power picosecond-pulse excimer laser system for x-ray generation", Proc. SPIE 2992, Excimer Lasers, Optics, and Applications, (31 March 1997); https://doi.org/10.1117/12.270098

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KEYWORDS

Picosecond phenomena

X-rays

Excimer lasers

Pulsed laser operation

Oscillators

Laser systems engineering

Optical amplifiers

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