Institute of Microelectronics of Chinese Academy of Sciences and Jiangsu National Synergetic Innovation Center for Advanced Materials, China
Diffraction Gratings, Binary Optics, Optical Design and Fabrication, High-Resolution Spectroscopy.
Optics in Astronomy and Astrophysics
Photonics, Optics and Laser Technology
Spectroscopy, Imaging and Metrology
We propose the quasi-triangle array of rectangular holes with the completely suppression of high order
diffractions. The membrane with holes can be free-standing and scalable from X-rays to far infrared
wavelengths. Both numerical and experimental results demonstrate the completely suppression of high order
diffractions. The desired diffraction pattern only containing the 0th and +1st/-1st order diffractions results
from the constructive interference of lights from different holes according to some statistical law
distribution. The suppression effect depends on the number of holes. Our results should be of great interest
in a wide spectrum unscrambling for any wavelength range.