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physics.optics2021
High performance distributed feedback quantum dot lasers with laterally coupled dielectric grating
Zhuohui Yang, Zhengqing Ding, Lin Liu +8
The combination of grating-based frequency-selective optical feedback mechanisms, such as distributed feedback (DFB) or distributed Bragg reflector (DBR) structures, with quantum d…
physics.optics2018
An Ultra-high Numerical Aperture Metalens at Visible Wavelengths
Haowen Liang, Qiaoling Lin, Xiangsheng Xie +8
We demonstrate a metalens with NA = 0.98 in air, a bandwidth (FWHM) of 274 nm and a focusing efficiency of 67% at 532 nm wavelength, which is close to the transmission performance…