Abstract
In a way analogous to a light pulse that can be optically delayed via slow light propagation in Kerr-type nonlinear media, we theoretically demonstrate that beam steering and spatial walk-off compensation can be achieved in noncollinear optical parametric amplification. We identify this effect as a result of the quadratic phase shift induced by parametric amplification that leads to the cancellation of the spatial walk-off and collinear propagation of all beams though they have different wavevectors. Experimental evidence is reported of a soliton array steering in a Kerr slab waveguide.
Highlights
Slow and fast light (SFL) has been the subject of numerous studies in fiber optics [1,2,3,4,5]
Based on the well-known space-time duality of the nonlinear Schrodinger equation, we show that a laser beam can be significantly steered in a noncollinear spatial optical parametric amplification (OPA) interaction, in a way analogous to a light pulse that can be optically delayed through OPA
We provide a clear derivation of the formula for the phase shift and the spatial walk-off induced by OPA
Summary
Slow and fast light (SFL) has been the subject of numerous studies in fiber optics [1,2,3,4,5]. SFL has been achieved using optical parametric amplification (OPA) in a nonlinear optical fiber [5,6,7]. In such a process, OPA provides gain and an optical delay between the interacting pulses that perfectly balances the temporal walk-off due to group-velocity dispersion (GVD) and leads to group-velocity matching between the interacting pulses [5, 7]. Parametric beam steering and trapping is observed in isotropic Kerr media. Since its first observation in 1996 [11], very few studies have focused on the spatial case of four-wave mixing in Kerr media [12,13,14,15,16], whereas temporal four-wave mixing or modulation instability processes have extensively been investigated in the context of fiber optics [17]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
