We describe a design for producing a soft x-ray laser via 3p-3s transitions in Ne-like selenium (wavelength of about 200). A 0.53-μ m laser, focused in a 1.2×0.02-cm spot to ∼ 5×1013 W/cm2, heats and burns through a thin foil of Se. Besides ionizing the Se to a Ne-like state, the laser explodes the foil, creating a region of uniform electron density. This allows propagation of the x rays down the 1-cm-long gain direction without debilitating refraction. Gains of 4 to 10 cm-1 are predicted for various transitions.
ASJC Scopus subject areas
- Physics and Astronomy(all)