title: Tailoring Čerenkov second-harmonic generation in bulk nonlinear photonic crystal.
abstract: We investigate theoretically the Čerenkov-type second-harmonic generation in two-dimensional bulk nonlinear photonic crystal with longitudinal modulation of the χ((2)) nonlinearity. We show that in this scheme the Čerenkov radiation can be achieved simultaneously at multiple directions with comparable intensities. The angles of emission are controllable by the spatial modulation of the nonlinearity. We propose a design of the periodically poled domain pattern, which maximizes the efficiency of the second-harmonic emission.
authors: Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia. ysh111@physics.anu.edu.au
authors: Yan
authors: Y
authors: Sheng
authors: Vito
authors: V
authors: Roppo
authors: Qian
authors: Q
authors: Kong
authors: Ksawery
authors: K
authors: Kalinowski
authors: Qi
authors: Q
authors: Wang
authors: Crina
authors: C
authors: Cojocaru
authors: Jose
authors: J
authors: Trull
authors: Wieslaw
authors: W
authors: Krolikowski