Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation
Ridge Waveguides and Y-Branch Beam Splitters in KTiOAsO4 Crystal by 15 MeV Oxygen Ion Implantation and Femtosecond Laser Ablation
复制标题
KTiOAsO4 晶体中的脊波导和 Y 分支分束器,采用 15 MeV 氧离子注入和飞秒激光烧蚀
DOI:
10.1109/jlt.2016.2636998
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发表时间:
2017-01
影响因子:
4.7
通讯作者:
Chen Feng
中科院分区:
文献类型:
--
作者:
Chen Chen;Akhmadaliev Shavkat;Romero Carolina;Vazquez de Aldana Javier R.;Zhou Shengqiang;Chen Feng
We report on the fabrication of ridge waveguides and Y-branch beam splitters in KTiOAsO4 nonlinear optical crystal by the combination of 15 MeV oxygen (O5+) ion implantation and femtosecond laser ablation. Guiding properties were investigated at the wavelengths of 633 and 808 nm, respectively, showing high polarization sensitivity of light propagation. Splitting ratios of these beam splitters are dependent on in-coupling alignment. The simulated guiding modal distributions of splitted guided beams, which was based on a reconstructed refractive index profile, shows reasonable consistence with the measured ones. After the stepwise annealing treatment at 473 and 573 K for 1 h each, the propagation losses for these guiding structures have been reduced considerably.
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