Real-time dual-wavelength digital holographic microscopy with a single hologram acquisition
| Autor: | Tristan Colomb, Etienne Cuche, Jonas Kühn, Frédéric Montfort, Pierre Marquet, Florian Charrière, Christian Depeursinge, Yves Emery |
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| Rok vydání: | 2007 |
| Předmět: |
[MVD]
Physics business.industry Holography Phase (waves) Holographic interferometry Instrumentation measurement and metrology : Phase measurement Atomic and Molecular Physics and Optics Interference microscopy law.invention Holography : Multiplex holography Wavelength Optics Microscopy : Interference microscopy law Holography : Computer holography Digital image processing Digital holographic microscopy business Digital holography |
| Zdroj: | Optics Express. 15:7231 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.15.007231 |
| Popis: | A technique to perform two-wavelengths digital holographic microscopy (DHM) measurements with a single hologram acquisition is presented. The vertical measurement range without phase ambiguity is extended to the micron-range, thanks to the resulting synthetic wavelength defined by the beating of two wavelengths with a separation of about 80nm. Real-time dual-wavelength imaging is made possible by using two reference waves having different wavelengths and propagation directions for the hologram recording. The principle of the method is exposed and experimental results concerning a 1.2mum m high test sample as well as a moving micro-mirror are presented. To the extent of our knowledge, this is the first time that real-time synthetic beat-wavelength digital holography measurements are reported. |
| Databáze: | OpenAIRE |
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