Abstract
We report recent investigations of optical field ionization soft-x-ray lasers. We generated the amplifying medium by focusing a circularly polarized 760-mJ, 30-fs 10-Hz Ti:sapphire laser system into a gas cell a few millimeters long filled with xenon or krypton gas. A gain of 67 cm-1 on the 4d95p-4d95d transition at 41.8 nm in Pd-like xenon and a gain-length product of 15 have been inferred at saturation. This source delivers ∼5 × 109 photons per pulse. More recently we demonstrated lasing at 32.8 nm in Ni-like krypton. The influence of the pumping energy and the laser polarization on the lasing output as well as on the far-field pattern of the x-ray laser beam are reported and discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 195-202 |
| Number of pages | 8 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 20 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2003 |