Guided-wave phase-matched second-harmonic generation in KTiOPO4 waveguide produced by swift heavy-ion irradiation

Yazhou Cheng; Yuechen Jia; Shavkat Akhmadaliev; Shengqiang Zhou; Feng Chen

doi:10.1117/1.OE.53.11.117102

3 November 2014 Guided-wave phase-matched second-harmonic generation in KTiOPO4 waveguide produced by swift heavy-ion irradiation

Yazhou Cheng, Yuechen Jia, Shavkat Akhmadaliev, Shengqiang Zhou, Feng Chen

Author Affiliations +

Optical Engineering, Vol. 53, Issue 11, 117102 (November 2014). https://doi.org/10.1117/1.OE.53.11.117102

Abstract

We report on the guided-wave second-harmonic generation in a KTiOPO₄ nonlinear optical waveguide fabricated by a 17 MeV O⁵⁺ ion irradiation at a fluence of 1.5×10¹⁵ ions/cm². The waveguide guides light along both TE and TM polarizations, which is suitable for phase-matching frequency doubling. Second harmonics of green light at a wavelength of 532 nm have been generated through the KTiOPO₄ waveguide platform under an optical pump of fundamental wave at 1064 nm in both continuous-wave and pulsed regimes, reaching optical conversion efficiencies of 5.36%/W and 11.5%, respectively. The propagation losses have been determined to be ∼3.1 and ∼5.7 dB/cm for the TE and TM polarizations at a wavelength of 632.8 nm, respectively.

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Yazhou Cheng, Yuechen Jia, Shavkat Akhmadaliev, Shengqiang Zhou, and Feng Chen "Guided-wave phase-matched second-harmonic generation in KTiOPO4 waveguide produced by swift heavy-ion irradiation," Optical Engineering 53(11), 117102 (3 November 2014). https://doi.org/10.1117/1.OE.53.11.117102

Published: 3 November 2014

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