title: Phase properties of X((2)) gratings in glass.
abstract: A new method for the measurement of the phase shift between second-harmonic light generated by a bulk glass and the injected second-harmonic seed is presented. A linearly polarized pump and a second-harmonic seed with noncollinear polarizations were used for preparation of cerium-doped lead-silica glass. Independence of the phase shift from the angle between the polarizations of the recording waves is demonstrated, and a phase shift value close to 90 degrees is observed, i.e., the X((2)) grating was in phase with the real ?E(EE)?.
authors.forename: M A
authors.initials: MA
authors.lastname: Bolshtyansky
authors.forename: V M
authors.initials: VM
authors.lastname: Churikov
authors.forename: Y E
authors.initials: YE
authors.lastname: Kapitzky
authors.forename: A Y
authors.initials: AY
authors.lastname: Savchenko
authors.forename: B Y
authors.initials: BY
authors.lastname: Zel'dovich