We demonstrate a neonlike argon-ion x-ray laser, using a short-pulse laser-irradiated gas puff target. The gas puff target was formed by pulsed injection of gas from a high-pressure solenoid valve through a nozzle in the form of a narrow slit and irradiated with a combination of long, 600-ps and short, 6-ps high-power laser pulses with a total of 10 J of energy in a traveling-wave excitation scheme. Lasing was observed on the 3p 1S0→3s 1P1 transition at 46.9 nm and the 3d 1P1→3p 1P1 transition at 45.1 nm. A gain of 11 cm-1 was measured on these transitions for targets up to 0.9 cm long.
© 2001 Optical Society of America
Henryk Fiedorowicz, Andrzej Bartnik, James Dunn, Raymond F. Smith, James Hunter, Joseph Nilsen, Albert L. Osterheld, and Vyacheslav N. Shlyaptsev, "Demonstration of a neonlike argon soft-x-ray laser with a picosecond-laser-irradiated gas puff target," Opt. Lett. 26, 1403-1405 (2001)