Abstract

We propose dual-wavelength digital holographic microscopy with a slightly off-axis configuration. The axial measurement range without phase ambiguity is extended to the micrometer range by synthesizing a beat wavelength between the two wavelengths with separation of 157 nm. Real-time measurement of the specimen is made possible by virtue of the high wavelength selectivity of the Bayer mosaic filtered color CCD camera. The principle of the method is exposed, and the practicability of the proposed configuration is demonstrated by the experimental results on a vortex phase plate and a rectangular phase step.

©2012 Optical Society of America

Single-shot common-path off-axis dual-wavelength digital holographic microscopy

Manoj Kumar, Xiangyu Quan, Yasuhiro Awatsuji, Yosuke Tamada, and Osamu Matoba
Appl. Opt. 59(24) 7144-7152 (2020)

Real-time quantitative phase imaging by single-shot dual-wavelength off-axis digital holographic microscopy

Meng Huang, Hongpeng Qin, and Zhuqing Jiang
Appl. Opt. 60(15) 4418-4425 (2021)

Slightly off-axis interferometry for microscopy with second wavelength assistance

Junhe Han, Peng Gao, Baoli Yao, Yuzong Gu, and Mingju Huang
Appl. Opt. 50(17) 2793-2798 (2011)

Real-time dual-wavelength digital holographic microscopy with a single hologram acquisition

Jonas Kühn, Tristan Colomb, Frédéric Montfort, Florian Charrière, Yves Emery, Etienne Cuche, Pierre Marquet, and Christian Depeursinge
Opt. Express 15(12) 7231-7242 (2007)

Single-shot slightly off-axis digital holographic microscopy with add-on module based on beamsplitter cube

J. A. Picazo-Bueno, M. Trusiak, and V. Micó
Opt. Express 27(4) 5655-5669 (2019)