Abstract
Phase imaging by digital holography is widely used. An in-line optical setup is preferable for a practical use. A twin image, however, is a serious obstacle to achievement of high-quality phase imaging in in-line digital holography. For in-line digital holography, a time-division phase-shifting method or a wave-splitting phase-shifting method is used to eliminate the twin image. The former requires multiple exposures, and the latter requires specially designed optical elements. To solve these problems, a twin-image reduction method using a diffuser is proposed. In the proposed method, recording a digital hologram using a diffuser and signal processing enable reduction of the twin image on a reconstructed plane. A preliminary experimental result confirms the feasibility of the proposed method.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Yasuhiro Awatsuji, Masaki Sasada, Atsushi Fujii, and Toshihiro Kubota
Appl. Opt. 45(5) 968-974 (2006)
Miguel León-Rodríguez, Juan A. Rayas, Raúl R. Cordero, Amalia Martínez-García, Adrián Martínez-Gonzalez, Alejandro Téllez-Quiñones, Pedro Yañez-Contreras, and Orlando Medina-Cázares
Appl. Opt. 57(10) 2727-2735 (2018)
Yasuhiro Awatsuji, Atsushi Fujii, Toshihiro Kubota, and Osamu Matoba
Appl. Opt. 45(13) 2995-3002 (2006)