Optical gain was observed on the B → X transition of the Cs2+F− ionic excimer molecule at 185 nm. The excimer was produced by photoionization of CsF vapor with a laser-produced plasma source. An average net gain coefficient of 0.3 cm−1 was measured for 7 Torr of CsF and a 225-mJ pump laser.
© 1993 Optical Society of America
Original Manuscript: August 5, 1993
Published: December 15, 1993
Cs. Tóth, J. F. Young, and R. Sauerbrey, "Optical gain in the ionic excimer Cs2+F− excited by soft x rays from a laser-produced plasma," Opt. Lett. 18, 2120-2122 (1993)