Abstract
We report the first experimental demonstration of a Ni-like optical-field ionization collisional soft x-ray laser. The amplifying medium is generated by focusing a circularly polarized 760 mJ, 30 fs, 10-Hz Ti:sapphire laser beam in a few mm cell filled with krypton. We have measured a gain coefficient of [Formula presented] on the [Formula presented] [Formula presented] transition at 32.8 nm, which is here amplified for the first time. This radiation source represents the shortest wavelength optical-field ionization collisional soft x-ray laser ever produced. The influence of the gas pressure and the pumping energy on the lasing output are also presented.
| Original language | English |
|---|---|
| Journal | Physical Review Letters |
| Volume | 89 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - 1 Jan 2002 |
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