We propose an enhanced quantitative three-dimensional measurement system using wavelength-multiplexed digital holography. To simplify the configuration, a dual-peak quantum dot wavelength converter, combined with a blue LED, is adapted as a single lowcoherence light source. Rather than a conventional dual-wavelength method, which records and reconstruct the object wave for each wavelength, the proposed system can capture the holograms of two wavelengths simultaneously with fewer acquisitions, simple setup, and low noise. To verify the system's performance, the measurements of the step height sample are presented.
Bibliographical noteFunding Information:
National Research Foundation of Korea (NRF) (2016R1A2B4008869).
© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics