Simultanous two-wavelength phase unwrapping using external module for multiplexing off-axis holography
| Autor: | Natan T. Shaked, Nir A. Turko |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Holography FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Sample (graphics) Multiplexing Phase unwrapping Atomic and Molecular Physics and Optics law.invention 010309 optics Wavelength Optics Interference (communication) law 0103 physical sciences Phase imaging Microscopy 0210 nano-technology business Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.1904.01445 |
| Popis: | We present a dual-wavelength external holographic microscopy module for quantitative phase imaging of 3D structures with extended thickness range. This is done by simultaneous acquisition of two off-axis interferograms, each of which at a different wavelength, and generation of a synthetic wavelength, which is larger than the sample optical thickness, allowing two-wavelength unwrapping. The simultaneous acquisition is carried out by using optical multiplexing of the two interferograms onto the camera, where each of them has orthogonal off-axis interference fringe direction in relation to the other one. We used the system to quantitatively image a 7.96 um step target and 30.5 um circular copper pillars. https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-1-73 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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