KTiOPO4 double barrier optical waveguides produced by Rb+-K+ ion exchange and subsequent He+-ion irradiation

Xiao-Jun Cui; Liang-Ling Wang; Hai-Kun Zhang; Tao Chen

doi:10.1117/1.OE.55.3.036107

11 March 2016 KTiOPO₄ double barrier optical waveguides produced by Rb⁺-K⁺ ion exchange and subsequent He⁺-ion irradiation

Xiao-Jun Cui, Liang-Ling Wang, Hai-Kun Zhang, Tao Chen

Author Affiliations +

Optical Engineering, Vol. 55, Issue 3, 036107 (March 2016). https://doi.org/10.1117/1.OE.55.3.036107

Abstract

We report on the fabrication and characterization of KTiOPO₄ optical waveguides formed by Rb⁺_-K⁺ ion exchange in high-purity RbNO₃ melt at 340°C for 90 min and subsequent He⁺-ion irradiation at energy of 500 keV and fluence of 3×10¹⁶ ions/cm². The irradiation of KTiOPO₄ crystals with He⁺ ions was simulated using the stopping range of ions in matter (SRIM’2006) software. The dark mode spectra of the samples were measured with the prism coupling method. The reconstructed refractive index profiles of the planar waveguide show a barrier in the middle of the guiding region, and a refractive index enhancement region on each side of the barrier, indicating the formation of a double waveguide.

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Xiao-Jun Cui, Liang-Ling Wang, Hai-Kun Zhang, and Tao Chen "KTiOPO₄ double barrier optical waveguides produced by Rb⁺-K⁺ ion exchange and subsequent He⁺-ion irradiation," Optical Engineering 55(3), 036107 (11 March 2016). https://doi.org/10.1117/1.OE.55.3.036107

Published: 11 March 2016

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