[16p-Z09-1~14] 3.1 Basic optics and frontier of optics

△ [16p-Z09-10] Improvement in orbital angular momentum decomposition of optical vortices by using polarization gratings

〇(M1)Kensuke Iitsuka¹, Keisaku Yamane¹, Kazuki Kawamura¹, Moritsugu Sakamoto², Hiroshi Ono², Kazuhiko Oka³, Yasunori Toda¹, Ryuji Morita¹ (1.Hokkaido Univ., 2.Nagaoka Univ., 3.Hirosaki Univ.)

Keywords:optical vortex, orbital angular momentum, polarization grating

High-precision orbital-angular-momentum (OAM) decomposition of optical vortices is presented. The resolution of the OAM decomposition based on log-polar transformation has been greatly improved by using polarization gratings, and the cross-talk between the neighboring OAM modes has been significantly suppressed.