We report saturated operation of an 18.9-nm laser at 5-Hz repetition rate. An amplification with a gain-length product GL of 15.5 is obtained in the 4d 1S_0 - 4p 1P_1 laser line of Ni-like Mo in plasmas heated at grazing incidence with ∼1-J pulses of 8.1-ps duration from a tabletop laser system. Lasing is obtained over a broad range of time delays and pumping conditions. We also measure a GL of 13.5 in the 22.6-nm transition of the same ion. The results are of interest for numerous applications requiring high-repetition-rate lasers at wavelengths below 20 nm.
© 2005 Optical Society of America
B. M. Luther, Y. Wang, M. A. Larotonda, D. Alessi, M. Berrill, M. C. Marconi, J. J. Rocca, and V. N. Shlyaptsev, "Saturated high-repetition-rate 18.9-nm tabletop laser in nickellike molybdenum," Opt. Lett. 30, 165-167 (2005)