Wide-angle reflection-mode spatial filtering and splitting with photonic crystal gratings and single-layer rod gratings

Abstract

New diffractive optical elements offering a frequency tolerant, very efficient, high-pass and bandpass spatial filtering over a broad range of incidence angles are demonstrated by numerical simulations. The device operates in reflection mode owing to the (nearly) perfect blazing. It relies on two-dimensional square-lattice photonic crystals composed of dielectric rods with simple corrugations at the interface. Similar performance can be obtained with gratings composed of a single rod layer placed in the near field of a metal mirror, indicating a route to geometries that can be easily fabricated with modern nanotechnologies. Also equal splitting between zero and first negative orders can be obtained for incidence-angle variations that are wider than 60°.

© 2014 Optical Society of America

Wide-angle beam splitting by use of positive–negative refraction in photonic crystals

Ye Luo, Wei Zhang, Yidong Huang, Jianhui Zhao, and Jiangde Peng
Opt. Lett. 29(24) 2920-2922 (2004)

Cross-correlated imaging of single-mode photonic crystal rod fiber with distributed mode filtering

Marko Laurila, Roman Barankov, Mette M. Jørgensen, Thomas T. Alkeskjold, Jes Broeng, Jesper Lægsgaard, and Siddharth Ramachandran
Opt. Express 21(8) 9215-9229 (2013)

Wide-angle transmissive filter based on a guided-mode resonant grating

Yan Ye, Renjin Shao, Yun Zhou, and Linsen Chen
Appl. Opt. 51(24) 5785-5790 (2012)

Unidirectional transmission in photonic-crystal gratings at beam-type illumination

Atilla Ozgur Cakmak, Evrim Colak, Andriy E. Serebryannikov, and Ekmel Ozbay
Opt. Express 18(21) 22283-22298 (2010)

Photonic crystals with broadband, wide-angle, and polarization-insensitive transparency

Zhongqi Yao, Jie Luo, and Yun Lai
Opt. Lett. 41(21) 5106-5109 (2016)