Clausen, Carl A. Balslev1; Bang, Ole2; Kivshar, Yu.S.4
1 Department of Informatics and Mathematical Modeling, Technical University of Denmark2 Department of Photonics Engineering, Technical University of Denmark3 Australian National University4 Australian National University
We show that the evolution of the average intensity of cw beams in a quasi-phase-matched quadratic (or chi((2))) medium is strongly influenced by induced Kerr effects, such as self- and cross-phase modulation. We prove the existence of rapidly oscillating solitary waves (a spatial analog of the guided-center soliton) supported by the quadratic and induced cubic nonlinearities.
Physical Review Letters, 1997, Vol 78, Issue 25, p. 4749-4752