Unified approach to Čerenkov second harmonic generation
Date
2013-11-04
Authors
Roppo, Vito
Kalinowski, Ksawery
Sheng, Yan
Cojocaru, Crina
Trull, Jose
Krolikowski, Wieslaw
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Publisher
Optical Society of America
Abstract
We discuss the effect of second harmonic generation via the Čerenkov-like process in nonlinear bulk media and waveguides. We show that in both schemes the Čerenkov harmonic emission represents in fact a nonlinear Bragg diffraction process. It is therefore possible, for the first time, to describe the bulk and waveguide Čerenkov emission uniformly by considering the spatial modulation of the second-order nonlinear polarization. This is also experimentally illustrated by studying the Čerenkov second harmonic generation at the boundary of a nonlinear quadratic medium via the total internal reflection inside the nonlinear crystal.
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Source
Optics express
Type
Journal article