Refractive index modulation of YAG crystal through electronic energy depositions of argon ions
Refractive index modulation of YAG crystal through electronic energy depositions of argon ions
复制标题
通过氩离子的电子能量沉积来调节 YAG 晶体的折射率
DOI：
10.1016/j.rinp.2020.103217
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发表时间：
2020-09
影响因子：
5.3
通讯作者：
Feng Chen
中科院分区：
文献类型：
--
作者：
Chen Chen;Rang Li;Lilong Pang;Zhiguang Wang;Feng Chen
这项工作证明了通过氩离子的电子能量沉积来调制变深度YAG晶体折射率的可行性。成功制备了不同几何形状的表面和埋包层波导层，能够在1064nm红外波段进行有效的光约束和制导。根据电子停止功率的变化，合理地重建了辐照层的折射率分布。通过测量的微拉曼光谱和信号强度与穿透深度的关系，给出了离子辐照晶体结构损伤程度的信息。在折射率调制晶体的基础上，制作出了具有优良导流性能的脊波导。基于本文所展示的精确折射率调制，活性离子掺杂YAG波导具有更高的性能，如高效波导激光振荡和高增益集成光信号放大，有望得到更广泛的应用。
This work has demonstrated the feasibility to modulate the refractive index of YAG crystal at variable depths via electronic energy depositions of argon ions. Surface and buried cladding waveguide layers of various geometries were successfully created, which are capable of effective light confinement and guidance at infrared waveband of 1064 nm. Refractive index profiles of irradiated layers were reconstructed in a reasonable manner according to the variations of electronic stopping powers. Information about the structural damage level of ion irradiated crystal were given by measured micro-Raman spectra and signal intensity dependence on penetration depth. Ridge waveguides with superior guiding performances were also manufactured on the platform of refractive index modulated crystals. Based on the precise index modulation shown in this work, extended applications of active ion doped YAG waveguides with better performances, such as high-efficiency waveguide laser oscillation and high-gain integrated optical signal amplification, could be expected.
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