Managing light in engineered nonlinear optical structures

Xin Chen
Optical frequency conversion process allows one to generate coherent light in wavelength ranges that are not readily available. It is well known that because of dispersion, the phase mismatch between interacting waves leads to low efficiency of frequency generation. Quasi-phase matching (QPM) that uses crystals with a spatial modulation of the second-order nonlinear coefficient χ(2), also known as nonlinear photonic crystals (NPC), is an important technique to solve the phase mismatch problem. With proper design...
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