[26a-E302-1~11] 3.8 Optical measurement, instrumentation, and sensor

[26a-E302-1] 1550 nm polarization probe-type polarization imaging by using polarization grating

〇(M2)NHAN THANH HUYNH¹, Moritsugu Sakamoto^1,4, Kohei Noda^1,4, Tomoyuki Sasaki^1,4, Masayuki Tanaka², Nobuhiro Kawatsuki^3,4, Hiroshi Ono^1,4 (1.Nagaoka Univ., 2.OPT Gate Co.LTD, 3.Univ. of Hyogo, 4.CREST, JST)

Keywords:Polarization imaging, Polarization grating, 1550 nm

A Near-IR 1550 nm polarization probe-type polarization imaging by using polarization grating has been developed. We have conducted demonstration experiments of the PPPI system using near-infrared light with a wavelength of 976 nm and succeeded in finding some usefulness in inspection applications. We report the results of a new attempt at PPPI in the 1550 nm band with the purpose of increasing the wavelength.