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Updated: Jun 26, 2026
Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
Published on: July 18, 2015
Design and analysis of two-dimensional high-index-contrast grating surface-emitting lasers
Rakesh G Mote1, S F Yu, Wei Zhou
1Precision Engineering and Nanotechnology Centre, School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore.
Abstract:
The use of a two-dimensional (2D) high-index-contrast grating (HCG) with square periodic lattice is proposed to realize surface-emitting lasers. This is possible because the use of 2D HCG, in which multiple resonant leaky modes are excited by the 2 orthogonal directions of the grating, causes the high reflective zone to be split into two regions. Hence, a dip of the reflectivity is formed to support the excitation of a resonant cavity-mode inside the 2D HCG. With suitable design on the dimensions of the 2D HCGs, Q factor as high as 1032 can be achieved.
