J. Wang, C. Zhou, J. Ma, F. Zhu, and W. Huang, "High Efficient Reflective Dammann Grating,"
in Imaging and Applied Optics 2014,
OSA Technical Digest (online)
(Optical Society of America, 2014), paper JTu4A.19.
A 1×2 reflective Dammann grating with efficiency of 97% higher than the traditional scalar one is designed. We fabricate the reflective gratings with period of 1879nm at wavelength of 1064nm by direct laser writing.