Multistep cascading and fourth-harmonic generation |
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| Institution: | 1. Australian Photonics Cooperative Research Centre, Research School of Physical Sciences and Engineering Optical Sciences Centre, Australian National University, Canberra ACT 0200, Australia;2. Quantum Electronics Department, Faculty of Physics, University of Sofia, Sofia 1164, Bulgaria |
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| Abstract: | A concept of multistep cascading is applied to the problem of fourth-harmonic generation (FHG) in a single quadratic crystal, and a new model of parametric wave mixing is analyzed in detail. Important applications to the optical frequency division and efficient FHG as well as the realization of the double-phase-matching multistep cascading processes in engineered QPM structures with phase-reversal sequences are also suggested. |
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