title: Supercontinuum assisted trapped electron accumulation in titanium oxide gel by femtosecond laser pulses.
abstract: Long-lived trapped electrons are generated in titanium oxide gels in a convergent part of a loosely focused beam from a millijoule, femtosecond Ti:Sapphire laser. The appearance of trapped electrons is accompanied by the generation of the white supercontinuum. Considering the relevant physical mechanisms of trapped electron accumulation, we show that two-photon interband transitions with participation of photons at the fundamental frequency and from the blue part of the supercontinuum explain the experimental findings.
authors.forename: A I
authors.initials: AI
authors.lastname: Kuznetsov
authors.forename: A
authors.initials: A
authors.lastname: Kanaev
authors.forename: N
authors.initials: N
authors.lastname: Bityurin