title: Digital holography based on multiwavelength spatial-bandwidth-extended capturing-technique using a reference arm (Multi-SPECTRA).
abstract: Single-shot digital holography based on multiwavelength spatial-bandwidth-extended capturing-technique using a reference arm (Multi-SPECTRA) is proposed. Both amplitude and quantitative phase distributions of waves containing multiple wavelengths are simultaneously recorded with a single reference arm in a single monochromatic image. Then, multiple wavelength information is separately extracted in the spatial frequency domain. The crosstalk between the object waves with different wavelengths is avoided and the number of wavelengths recorded with both a single-shot exposure and no crosstalk can be increased, by a large spatial carrier that causes the aliasing, and/or by use of a grating. The validity of Multi-SPECTRA is quantitatively, numerically, and experimentally confirmed.
authors.forename: Tatsuki
authors.initials: T
authors.lastname: Tahara
authors.forename: Toru
authors.initials: T
authors.lastname: Kaku
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Arai
mesh_terms: D003198:Computer Simulation; D006696:Holography / Q000379:methods*; D009716:Numerical Analysis, Computer-Assisted; D055620:Optical Phenomena; D012815:Signal Processing, Computer-Assisted