Short Pulse X-Ray Laser at 32.6 nm Based on Transient Gain in Ne-like Titanium
P. V. NicklesMax Born Institute Berlin, Rudower Chaussee 6, 12489 Berlin, GermanyVyacheslav N. ShlyaptsevP. N. Lebedev Physical Institute, Leninsky Prospect 53, Moscow, RussiaM.P. KalachnikovMax Born Institute Berlin, Rudower Chaussee 6, 12489 Berlin, GermanyM. SchnürerMax Born Institute Berlin, Rudower Chaussee 6, 12489 Berlin, GermanyI. WillMax Born Institute Berlin, Rudower Chaussee 6, 12489 Berlin, GermanyW. SandnerMax Born Institute Berlin, Rudower Chaussee 6, 12489 Berlin, Germany
1997en
ABI
Annotatsiya
A novel two-step excitation scheme for an efficient table-top x-ray laser has been realized for the first time. A nanosecond pulse creates a plasma of neonlike ions of titanium, followed by a subpicosecond pulse which excites a nonstationary population inversion. With only a few joules of pump energy, a compact x-ray laser at 32.6 nm with a very high gain coefficient of $g\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}19{\mathrm{cm}}^{\ensuremath{-}1}$ and a gain-length product of $gL\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}9.5$ was achieved.
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