AI Article Synopsis
- The study introduces a new method for 3D surface imaging that combines synthetic wavelength phase-based ranging and line-scan off-axis holography.
- The system uses a faster tunable laser for quick wavelength switching and a galvanometer mirror for mechanical scanning, allowing for precise depth measurements.
- Results show the system achieves micron-level depth accuracy over a field of view of 12.8 mm × 34 mm with a rapid image acquisition time of just 50 ms.
Article Abstract
We demonstrate a novel, to our knowledge, approach for phase-resolved coherent 3D surface imaging that utilizes synthetic wavelength phase-based ranging and line-scan off-axis holography. Our proof-of-concept system employs an akinetic tunable laser to perform fast wavelength switching and a galvanometer mirror for slow-axis mechanical scanning. Quantitative depth measurements of an anodized aluminum plate and 3D-printed depth calibration targets and a printed circuit board are demonstrated. Analyses of both shot-noise limited system performance and speckle noise are also presented. The proof-of-concept system achieves micron-scale depth precision with a FOV of 12.8 mm × 34 mm and a 50 ms image acquisition time.
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| http://dx.doi.org/10.1364/OL.532480 | DOI Listing |
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