Zhaoyu Zhang

Two-dimensional fivefold photonic crystal micro-cavity

Triangular- and square-lattice photonic crystal (PhC) micro-cavities with high quality factor and ultra-small effective modal volume have been widely researched [1, 2]. In this article, we originally proposed a fivefold PhC micro-cavity structure and presented a brief description of its photonic band gap, the characteristics of its defect modes and the photoluminescence (PL) spectrum were performed.

Flexible visible photonic crystal laser

Photonic crystal (PhC) lasers feature compact mode volume with high quality factor and they are promising candidates for ultra-fast and ultimate thresholdless lasing operation [1]. Until now, most photonic crystal lasers fabricated on silicon [2], III-V [3] and organic hybrid platforms [4] are limited by their natural rigidities. Here we report on a hybrid laser platform comprised of flexible organic supporting material PDMS and inorganic III-V material designed to operate in the spectral vicinity of 670 nm, which could be applied to ultra-small biosensors, flexible laser projection displays.

Characteristic analysis and comparison of two kinds of hybrid plasmonic annular resonators

We present studies of two kinds of hybrid plasmonic annular resonators with different cross-sectional shapes of circle and square. Their performance as defined by the Q/V ratio is enhanced considerably with a reduction in their physical dimensions. There exists critical annular radii below which “circle ring” outperforms “square ring”.

Two-dimensional fivefold photonic crystal microcavity

Triangular- and square-lattice photonic crystal (PhC) micro-cavities with high quality factor and ultra-small effective modal volume have been widely researched [1, 2]. In this article, we originally proposed a fivefold PhC micro-cavity structure and presented a brief description of its photonic band gap, the characteristics of its defect modes and the photoluminescence (PL) spectrum were performed.