We propose single-shot multiwavelength digital holography using a monochromatic image sensor and dual reference arms. Multiple wavelength information is multiplexed on the monochromatic image sensor plane in the space domain and is separated in the spatial frequency domain by utilizing the difference between the spatial frequencies of interference fringes at respective wavelengths. The recordable spatial bandwidth that is utilized for object waves is extended by using dual reference arms in comparison with that using a single reference arm. Both the three-dimensional and three-wavelength information of an object were recorded and reconstructed without the crosstalk between object waves with multiple wavelengths.
Tatsuki Tahara, Shingo Takeshita, Kenta Morimoto, Toru Kaku, and Yasuhiko Arai, "Three-wavelength digital holography using spatial frequency-division multiplexing and dual reference arms," Proc. SPIE 9720, High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management, 972009 (Presented at SPIE BiOS: February 13, 2016; Published: 7 March 2016); https://doi.org/10.1117/12.2213980.
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