School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
Opt Lett. 2011 Nov 1;36(21):4173-5. doi: 10.1364/OL.36.004173.
Focused proton beam writing has been utilized to fabricate optical channel waveguides in Nd:GGG crystals. The 1 MeV proton beam irradiation creates a local modified region with positive refractive index changes at the end of the proton trajectory, in which the channel waveguide could confine the light field in a symmetric way. Room-temperature laser emission has been achieved at 1063.7 nm, with absorbed pump power of 61 mW (at 808 nm). The obtained slope efficiency of the Nd:GGG waveguide laser system is as high as 66%, which is, to our best knowledge, the highest value for integrated lasers from ion beam processed channel waveguide systems.
利用聚焦质子束写入技术在 Nd:GGG 晶体中制作了光学通道波导。1 MeV 的质子束辐照在质子轨迹的末端产生了一个局部改性区域，折射率呈正变化，其中通道波导可以以对称的方式限制光场。在室温下，1063.7nm 处实现了激光发射，吸收的泵浦功率为 61mW（808nm）。所获得的 Nd:GGG 波导激光系统的斜率效率高达 66%，据我们所知，这是离子束处理通道波导系统集成激光器的最高值。
