[15p-2F-1~15] 4.5 Information Photonics

▲ [15p-2F-4] Four-step in-line digital holography simultaneously sensing dual-wavelength information using wavelength-multiplexed holograms

〇Tatsuki Tahara¹, Ryota Mori¹, Yasuhiko Arai¹, Yasuhiro Takaki² (1.Kansai Univ., 2.Tokyo Univ. Agric. Tech.)

キーワード：Multiwavelength-imaging technique,Phase-division-multiplexing technique,Digital holography

Four-step in-line digital holography simultaneously sensing dual-wavelength based on phase-division multiplexing is proposed. In phase-division multiplexing, wavelength information is multiplexed in the space domain and separately extracted in the polar coordinate plane. This time four-step recording of dual wavelengths is achieved by merging two-step phase-shifting interferometry. Its validity is numerically confirmed.