Off-axis setup taking full advantage of incoherent illumination in coherence-controlled holographic microscope
| Autor: | Zbyněk Dostál, Martin Antoš, Martin Lošťák, Radim Chmelík, Pavel Kolman, Tomáš Slabý |
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| Rok vydání: | 2013 |
| Předmět: |
Physics
Microscopy Microscope business.industry Phase-contrast imaging Holography Physics::Optics Equipment Design Image Enhancement Atomic and Molecular Physics and Optics law.invention Equipment Failure Analysis Optics Imaging Three-Dimensional Interferometry law Achromatic lens Digital holographic microscopy Spatial frequency business Diffraction grating Lighting Tomography Optical Coherence Coherence (physics) |
| Zdroj: | Optics express. 21(12) |
| ISSN: | 1094-4087 |
| Popis: | Coherence-controlled holographic microscope (CCHM) combines off-axis holography and an achromatic grating interferometer allowing for the use of light sources of arbitrary degree of temporal and spatial coherence. This results in coherence gating and strong suppression of coherent noise and parasitic interferences enabling CCHM to reach high phase measurement accuracy and imaging quality. The achievable lateral resolution reaches performance of conventional widefield microscopes, which allows resolving up to twice smaller details when compared to typical off-axis setups. Imaging characteristics can be controlled arbitrarily by coherence between two extremes: fully coherent holography and confocal-like incoherent holography. The basic setup parameters are derived and described in detail and experimental validations of imaging characteristics are demonstrated. |
| Databáze: | OpenAIRE |
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