Induced ‘third-order’ nonlinearity via cascaded second-order effects in organic crystals of MBA-NP

Widely Tunable Intracavity Phasematched Cascaded Second-Order Interaction for the Generation of Multicolor Radiation

“…In comparison, the maximum experimental χ (3) e f f value obtained using eqn. (11) at h = 0, θ = 22.91°is 885.18 pm 2 /V 2 which is extrapolated to 2.86 × 10 3 pm 2 /V 2 at h = 0. We could not take the measurement at h = 0 due to the limitation in the reflectivity of the cavity mirrors used.…”

“…Considering slowly varying envelope and plane wave approximations, optical parametric amplification (OPA) and evolution of second harmonic field with the propagation in the NLC is governed by the following coupled amplitude equations [11]:…”

“…Its potentiality of generating large third-order nonlinearities of controllable sign has been exploited by R. Desalvo et al and others [2], [9], [10]. Nitti et al and others have demonstrated second-order cascaded optical parametric processes for shifting energy between nearby wavelengths [11]- [13]. Given the applications of cascaded processes, the study of induced susceptibility is of central importance.…”

Multi-colour OPO based on second order cascaded nonlinear interaction

“…Since the two processes are correlated and occur simultaneously, the overall process can be viewed as an effective third order process: ω sh =ω p +ω i -ω s . Considering slowly varying envelope and plane wave approximation, OPG and evolution of second harmonic field with the propagation in the NLC will be governed by the following coupled amplitude equations [5]: …”

Quadratic Cascading: Effects and Applications

“…|∆|→0). This observation, implicit in the non-degenerate analysis, 20 was outlined in the context of SHG by Belostotsky et al 36 Experimental verification of cascaded phase-shifts through frequency non-degenerate interactions have been reported by Nitti et al in the organic crystal MBA-NP 37 and by Asobe et al in PPLN. 38 Related effects have been discussed in [39].…”