title: Non-trivial scaling of self-phase modulation and three-photon absorption in III-V photonic crystal waveguides.
abstract: We investigate the nonlinear response of photonic crystal waveguides with suppressed two-photon absorption. A moderate decrease of the group velocity (approximately c/6 to c/15, a factor of 2.5) results in a dramatic (x 30) enhancement of three-photon absorption well beyond the expected scaling, proportional, variant 1/v3g. This non-trivial scaling of the effective nonlinear coefficients results from pulse compression, which further enhances the optical field beyond that of purely slow-group velocity interactions. These observations are enabled in mm-long slow-light photonic crystal waveguides owing to the strong anomalous group-velocity dispersion and positive chirp. Our numerical physical model matches measurements remarkably.
authors.affiliation: 1Thales Research and Technology, Route Départementale 128, 91767 Palaiseau, France. cah2116@columbia.edu
authors.forename: Chad
authors.initials: C
authors.lastname: Husko
authors.forename: Sylvain
authors.initials: S
authors.lastname: Combrié
authors.forename: Quynh V
authors.initials: QV
authors.lastname: Tran
authors.forename: Fabrice
authors.initials: F
authors.lastname: Raineri
authors.forename: Chee Wei
authors.initials: CW
authors.lastname: Wong
authors.forename: Alfredo
authors.initials: A
authors.lastname: De Rossi
mesh_terms: D017076:Computer-Aided Design; D003460:Crystallization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008027:Light; D017711:Nonlinear Dynamics; D017785:Photons; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation