We present a novel single-shot four-wavelength quantitative phase microscopy (FW-QPM). Four lasers operating at different wavelengths are multiplexed with a pair of dichroic mirrors and a polarization beam splitter in a three-mirror quasi-common-path interferometer. After a single-shot interference pattern is obtained with a monochrome camera, four holograms of different wavelengths were demultiplexed from it in the frequency domain with polarization- and frequency-division multiplexing. Polarization-division demultiplexing scheme uses polarization dependent visibility changes in an interference pattern, and it plays a critical role in making only two interference patterns exist within a single quadrant in the frequency domain. We have used a single-mode optical fiber as a phase object sample and demonstrated that a measured single-shot interference pattern can be successfully demultiplexed into four different interferograms of different wavelengths with our proposed scheme.
Bibliographical noteFunding Information:
National Research Foundation of Korea (2012R1A4A1029061, 2013R1A1A2062448, 2017R1A2B2003808, 2017R1A2B4003950); Ministry of Science, ICT and Future Planning of Korea (CAMM-2014M3A6B3063712, IITP-2017-2016-0-00464); Ministry of Trade industry & Energy of Korea (10062417); Ministry of Education Science and Technology of Korea (BK21 program).
© 2017 Optical Society of America.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics