Demystifying speckle field interference microscopy
Abstract Dynamic speckle illumination (DSI) has recently attracted strong attention in the field of biomedical imaging as it pushes the limits of interference microscopy (IM) in terms of phase sensitivity, and spatial and temporal resolution compared to conventional light source illumination. To dat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-14739-0 |
| _version_ | 1818117199773040640 |
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| author | Azeem Ahmad Nikhil Jayakumar Balpreet Singh Ahluwalia |
| author_facet | Azeem Ahmad Nikhil Jayakumar Balpreet Singh Ahluwalia |
| author_sort | Azeem Ahmad |
| collection | DOAJ |
| description | Abstract Dynamic speckle illumination (DSI) has recently attracted strong attention in the field of biomedical imaging as it pushes the limits of interference microscopy (IM) in terms of phase sensitivity, and spatial and temporal resolution compared to conventional light source illumination. To date, despite conspicuous advantages, it has not been extensively implemented in the field of phase imaging due to inadequate understanding of interference fringe formation, which is challenging to obtain in dynamic speckle illumination interference microscopy (DSI-IM). The present article provides the basic understanding of DSI through both simulation and experiments that is essential to build interference microscopy systems such as quantitative phase microscopy, digital holographic microscopy and optical coherence tomography. Using the developed understanding of DSI, we demonstrated its capabilities which enables the use of non-identical objective lenses in both arms of the interferometer and opens the flexibility to use user-defined microscope objective lens for scalable field of view and resolution phase imaging. It is contrary to the present understanding which forces us to use identical objective lenses in conventional IM system and limits the applicability of the system for fixed objective lens. In addition, it is also demonstrated that the interference fringes are not washed out over a large range of optical path difference (OPD) between the object and the reference arm providing competitive edge over low temporal coherence light source based IM system. The theory and explanation developed here would enable wider penetration of DSI-IM for applications in biology and material sciences. |
| first_indexed | 2024-12-11T04:34:37Z |
| format | Article |
| id | doaj.art-8548f18efa08454b82bd085a4d2eda1a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-11T04:34:37Z |
| publishDate | 2022-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8548f18efa08454b82bd085a4d2eda1a2022-12-22T01:20:47ZengNature PortfolioScientific Reports2045-23222022-06-0112111310.1038/s41598-022-14739-0Demystifying speckle field interference microscopyAzeem Ahmad0Nikhil Jayakumar1Balpreet Singh Ahluwalia2Department of Physics and Technology, UiT The Arctic University of NorwayDepartment of Physics and Technology, UiT The Arctic University of NorwayDepartment of Physics and Technology, UiT The Arctic University of NorwayAbstract Dynamic speckle illumination (DSI) has recently attracted strong attention in the field of biomedical imaging as it pushes the limits of interference microscopy (IM) in terms of phase sensitivity, and spatial and temporal resolution compared to conventional light source illumination. To date, despite conspicuous advantages, it has not been extensively implemented in the field of phase imaging due to inadequate understanding of interference fringe formation, which is challenging to obtain in dynamic speckle illumination interference microscopy (DSI-IM). The present article provides the basic understanding of DSI through both simulation and experiments that is essential to build interference microscopy systems such as quantitative phase microscopy, digital holographic microscopy and optical coherence tomography. Using the developed understanding of DSI, we demonstrated its capabilities which enables the use of non-identical objective lenses in both arms of the interferometer and opens the flexibility to use user-defined microscope objective lens for scalable field of view and resolution phase imaging. It is contrary to the present understanding which forces us to use identical objective lenses in conventional IM system and limits the applicability of the system for fixed objective lens. In addition, it is also demonstrated that the interference fringes are not washed out over a large range of optical path difference (OPD) between the object and the reference arm providing competitive edge over low temporal coherence light source based IM system. The theory and explanation developed here would enable wider penetration of DSI-IM for applications in biology and material sciences.https://doi.org/10.1038/s41598-022-14739-0 |
| spellingShingle | Azeem Ahmad Nikhil Jayakumar Balpreet Singh Ahluwalia Demystifying speckle field interference microscopy Scientific Reports |
| title | Demystifying speckle field interference microscopy |
| title_full | Demystifying speckle field interference microscopy |
| title_fullStr | Demystifying speckle field interference microscopy |
| title_full_unstemmed | Demystifying speckle field interference microscopy |
| title_short | Demystifying speckle field interference microscopy |
| title_sort | demystifying speckle field interference microscopy |
| url | https://doi.org/10.1038/s41598-022-14739-0 |
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