title: Group-velocity-matched cascaded quadratic nonlinearities of femtosecond pulses in periodically poled MgO:LiNbO3.
abstract: Large nonlinear phase shifts were generated with femtosecond pulses at 1560 nm through cascaded quadratic interactions in periodically poled MgO-doped LiNbO3. The off-diagonal component of the nonlinear coefficient was utilized for simultaneous quasi phase matching and group-velocity matching. The effective nonlinear refractive index was varied from -2.9 x 10(-14) to +3.3 x 10(-14) cm2/W by tuning the phase-mismatch conditions.
authors.affiliation: Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan. ashihara@iis.u-tokyo.ac.jp
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ashihara
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Shimura
authors.forename: Kazuo
authors.initials: K
authors.lastname: Kuroda
authors.forename: Nan Ei
authors.initials: NE
authors.lastname: Yu
authors.forename: Sunao
authors.initials: S
authors.lastname: Kurimura
authors.forename: Kenji
authors.initials: K
authors.lastname: Kitamura
authors.forename: Jung Hoon
authors.initials: JH
authors.lastname: Ro
authors.forename: Myoungsik
authors.initials: M
authors.lastname: Cha
authors.forename: Takunori
authors.initials: T
authors.lastname: Taira