Abstract
We propose a new (to our knowledge) scheme to generate a broadband water window supercontinuum in a neutral rare-gas media. Using a phase-stabilized few-cycle mid-IR pulse tailored by a much weaker pulse, a supercontinuum from 265 to is observed, and the ionization probability is below 0.1%. The nonionized media enable us to adopt the right phase-matching technique to select the short path of the supercontinuum, and an isolated pulse with a central wavelength of is straightforwardly obtained.
© 2009 Optical Society of America
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