Resonance in modulation instability from non-instantaneous nonlinearities
Journal
Optics InfoBase Conference Papers
Journal Volume
Part F108-NP 2018
Date Issued
2018
Author(s)
Abstract
To explore resonance phenomena in the nonlinear region, we show by experimental measurements and theoretical analyses that resonance happens in modulation instability (MI) from non-instantaneous nonlinearities in photorefractive crystals. With a periodic modulation in the external bias voltage, corresponding to a modulation in the nonlinear strength, an enhancement in the visibility of MI at resonant frequency is reported through spontaneous optical pattern formations. By modeling a nonlinear driving force to the system, theoretical curves obtained from a nonlinear non-instantaneous Schrodinger equation give good agreement to experimental data. As MI is a universal signature of symmetry-breaking phenomena, our observation on the resonance in MI provides a control on chaotic, solitary, and turbulence waves. ? 2018 The Author(s).
Subjects
Modulation; Natural frequencies; Nonlinear equations; Photorefractive crystals; Schrodinger equation; Driving forces; Modulation instabilities; Non-linear strength; Nonlinear regions; Optical pattern formation; Periodic modulation; Resonance phenomena; Symmetry-breaking; Nonlinear optics
SDGs
Type
conference paper