The main challenge in III-nitride VCSEL technology is the fabrication of n-side DBR due to the absence of highly reflective epitaxial DBR. We will mainly discuss the fabrication and use of nanoporous ...

In this paper, we propose a dual-band reflective linear-to-circular (LTC) polarization converter based on metasurface. The metasurface element is consist of the ground, rectangular and symmetrical ...