Optimal Vector Phase Matching for Second Harmonic Generation in Orthorhombic Non-Linear Optical Crystals |
| O. Buryya, N. Andrushchakb, A. Danylovc, B. Sahraouid, A. Andrushchakc
aDepartment of Semiconductor Electronics, Lviv Polytechnic National University, 12 Bandery str., 79013 Lviv, Ukraine bDepartment of Computer-Aided Design Systems, Lviv Polytechnic National University, 12 Bandery str., 79013 Lviv, Ukraine cDepartment of Applied Physics and Nanomaterials Science, Lviv Polytechnic National University, 12 Bandery str., 79013 Lviv, Ukraine dUniversity of Angers, MOLTECH-Anjou Laboratory, MR CNRS 6200, 2 bd Lavoisier, 49045 Angers, France |
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| Optimal geometries of vector phase matching are determined for the second harmonic generation in biaxial non-linear optical crystals of orthorhombic symmetry - CBO, LRB4, LBO, KB5, KNbO3, KTA, KTP. The directions of wave vectors ensuring the highest possible efficiency of the second harmonic generation are defined by the extreme surface method. It is shown, that the increase of the second harmonic generation efficiency (tens to hundreds per cent) provided by the realization of vector phase-matching conditions compared to the case of the scalar ones takes place for CBO, LRB4, KB5, KNbO3, KTA and KTP crystals. |
DOI:10.12693/APhysPolA.141.365 topics: second harmonic generation, biaxial crystals, phase matching, extreme surfaces |