Lasers, Fiber Optics, and Communications

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

[+] Author Affiliations
Xiao-Jun Cui, Liang-Ling Wang, Hai-Kun Zhang, Tao Chen

University of Jinan, School of Physics and Technology, No. 336, West Road of NanXinzhuang, Jinan 250022, China

Opt. Eng. 55(3), 036107 (Mar 11, 2016). doi:10.1117/1.OE.55.3.036107
History: Received October 23, 2015; Accepted February 23, 2016
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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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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

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", Opt. Eng. 55(3), 036107 (Mar 11, 2016). ; http://dx.doi.org/10.1117/1.OE.55.3.036107


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