Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA.
Opt Lett. 2011 May 15;36(10):1812-4. doi: 10.1364/OL.36.001812.
Dielectric shielded nanoscale patch laser resonators are introduced. Low-index dielectric shield layers surrounding a high-index core are shown to significantly reduce both metal and radiation losses. Structures suitable for both optical and electrical pumping and smaller than the vacuum wavelength in all three dimensions are shown to have a low enough threshold gain to lase at room temperature. Shifting the gain medium core provides control over the radiation pattern of the resonator and enables coupling of the laser light into a waveguide, opening opportunities for chipscale integration.
介电屏蔽纳米级贴片激光谐振器被提出。结果表明，高折射率核心周围的低折射率介电屏蔽层可以显著降低金属和辐射损耗。研究表明，对于适用于光泵浦和电泵浦的结构，在所有三个维度上都小于真空波长，其增益阈值足够低，可以在室温下激光激射。改变增益介质核心可以控制谐振器的辐射模式，并实现激光耦合到波导中，为芯片级集成提供了机会。
