[10p-A33-1~14] 3.7 Optical measurement, instrumentation, and sensor

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[10p-A33-11] Design of a high-extinction-ratio polarization separation device for Full-Stokes snapshot polarimetry

〇(M2)Yudai Sueda¹, Moritsugu Sakamoto^1,3, Kohei Noda^1,3, Kengo Fujii¹, Tomoyuki Sasaki^1,3, Nobuhiro Kawatsuki^2,3, Hiroshi Ono^1,3 (1.Nagaoka Univ. of Tech, 2.Univ. of Hyogo, 3.JST-CREST)

Keywords:

polarimetry,optics

Toward the realization of full-Stokes snapshot polarimetry in LiDAR, we newly designed a polarization hologram element configuration capable of suppressing the generation of higher-order diffracted light. In the conventional configuration, higher-order diffracted light caused by the optical-axis orientation distribution of the polarization holograms was mixed into the measurement spots, limiting the extinction ratio. Therefore, transmittance filters and a phase filter were introduced, and numerical calculations verified that suppression of higher-order diffracted light enables a higher extinction ratio and extension to full-Stokes measurement including S3.