Single-shot wavelength-multiplexing for off-axis digital holography with a spectral filter
- 22 October 2021
- journal article
- research article
- Published by Optica Publishing Group in Optics Express
- Vol. 29 (22), 36871-36885
- https://doi.org/10.1364/oe.440980
Abstract
We present a single-shot wavelength-multiplexing technique for off-axis digital holography based on a spectral filter. Only a spectral filter is inserted between beam splitter and mirror in reflection off-axis digital holography (RODH). The spectral filter can transmit a well-defined wavelength band of light, while reject other unwanted radiation. By adjusting the filter and mirror separately, the propagation orientation of different reference beams of two wavelengths can be separated, and thus two off- axis holograms with different fringe directions are simultaneously captured by a monochrome camera. The wavefront interference analysis of using a spectral filter is discussed in detail. Our scheme is available for real-time wavelength-multiplexing but requires fewer optical elements and system modifications. Numerical simulation and experiment results of different types of spectral filters demonstrate the validity of proposed method. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing AgreementFunding Information
- Basic and Applied Basic Research Foundation of Guangdong Province (2020A1515110283)
- Provincial Key Platform and Scientific Research Projects of Universities in Guangdong Province (2020KQNCX078)
- Supported by the Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province (GD202105)
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