title: Second-harmonic generation in a microradius LiNbO(3) cylinder with a quasi-elliptical cross section.
abstract: LiNbO(3) single-crystal fibers with diameters of 63 and 230 mum were grown, and the second-harmonic-generation (SHG) process was studied with femtosecond laser pulses perpendicularly focused to the fiber. SHG occurred without collinear phase matching, leading to wavelength-independent overall conversion efficiency, unlike in a bulk crystal. The scattering pattern of the second harmonic exhibited an intense forward peak and an almost-uniform, less-intense distribution around the fiber, owing to trapping in high-Q whispering modes. Implementation of a second-order autocorrelator with the 63-mum fiber demonstrates its application potential.
authors: J
authors: J
authors: Yu
authors: K
authors: K
authors: Giulietti
authors: F
authors: F
authors: Sourgen
authors: A
authors: A
authors: Ross
authors: J P
authors: JP
authors: Wolf
authors: M
authors: M
authors: Ferriol
authors: G
authors: G
authors: Foulon
authors: C
authors: C
authors: Goutaudier
authors: M T
authors: MT
authors: Cohen-Adad
authors: G
authors: G
authors: Boulon