Nonlinear photonic crystals of strontium tetraborate: properties and conversion of radiation

A. S. Aleksandrovsky; A. M. Vyunishev; A. I. Zaitsev; V. E. Rovsky; V. V. Slabko; A. V. Cherepakhin

doi:10.1117/12.853713

4 June 2010 Nonlinear photonic crystals of strontium tetraborate: properties and conversion of radiation

A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev, V. E. Rovsky, V. V. Slabko, A. V. Cherepakhin

Proceedings Volume 7728, Nonlinear Optics and Applications IV; 772819 (2010) https://doi.org/10.1117/12.853713
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

Random nonlinear photonic crystal (NPC) structures formed by as-grown domains in a non-ferroelectric strontium tetraborate (SBO) are investigated. The domain shape and orientation are similar to those in ferroelectric KTP. Nonlinear diffraction is the simplest way to detect, evaluate and characterize these structures. Reciprocal superlattice vectors spectra of NPC in SBO are very wide and enable broadband efficiency enhancement of nonlinear optical processes. Second harmonic (SH) generation of femtosecond Ti:sapphire oscillator radiation with 1.9% efficiency is obtained using nonlinear diffraction geometry. Random quasi phase matched generation at the wavelengths of fourth harmonic of Ti:sapphire laser is obtained with average power up to 1μW.

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A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev, V. E. Rovsky, V. V. Slabko, and A. V. Cherepakhin "Nonlinear photonic crystals of strontium tetraborate: properties and conversion of radiation", Proc. SPIE 7728, Nonlinear Optics and Applications IV, 772819 (4 June 2010); https://doi.org/10.1117/12.853713

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