期刊
OPTICS LETTERS
卷 44, 期 20, 页码 5025-5028出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.44.005025
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资金
- Russian Foundation for Basic Research [18-38-20057]
- Federal State Task Program
We report on the new technical realization of single-shot color digital holographic microscopy. For this application, we propose to use an original three-wavelength red, green, and blue laser based on the Nd:YAG active element with sequential parametric downconversion and upconversion of optical frequencies into red (634 nm), green (532 nm), and blue (451 nm) spectral intervals. This light source provides high-power short (similar to 10 ns) pulses and enables simultaneous formation of three color interference patterns in a two-path interferometer. Their registration by a color image sensor provides fast acquisition of phase delay distribution induced by the inspected object at three wavelengths without spectral tuning. (C) 2019 Optical Society of America
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