Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy
In the image plane configurations frequently used in digital holographic microscopy (DHM) systems, interference patterns are captured by a photo-sensitive array detector located at the image plane of an input object. The object information in these patterns is localized and thus extremely sensitive...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/2/68 |
| _version_ | 1797477141859794944 |
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| author | Nazif Demoli Denis Abramović Ognjen Milat Mario Stipčević Hrvoje Skenderović |
| author_facet | Nazif Demoli Denis Abramović Ognjen Milat Mario Stipčević Hrvoje Skenderović |
| author_sort | Nazif Demoli |
| collection | DOAJ |
| description | In the image plane configurations frequently used in digital holographic microscopy (DHM) systems, interference patterns are captured by a photo-sensitive array detector located at the image plane of an input object. The object information in these patterns is localized and thus extremely sensitive to phase errors caused by nonlinear hologram recordings (grating profiles are either square or saturated sinusoidal) or inadequate sampling regarding the information coverage (undersampled around the Nyquist frequency or arbitrarily oversampled). Here, we propose a solution for both hologram recording problems through implementing a photon-counting detector (PCD) mounted on a motorized XY translation stage. In such a way, inherently linear (because of a wide dynamic range of PCD) and optimum sampled (due to adjustable steps) digital holograms in the image plane configuration are recorded. Optimum sampling is estimated based on numerical analysis. The validity of the proposed approach is confirmed experimentally. |
| first_indexed | 2024-03-09T21:13:25Z |
| format | Article |
| id | doaj.art-d0105df877d241adb823cec024281d74 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T21:13:25Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-d0105df877d241adb823cec024281d742023-11-23T21:40:58ZengMDPI AGPhotonics2304-67322022-01-01926810.3390/photonics9020068Linearity and Optimum-Sampling in Photon-Counting Digital Holographic MicroscopyNazif Demoli0Denis Abramović1Ognjen Milat2Mario Stipčević3Hrvoje Skenderović4Institute of Physics, Bijenička cesta 46, 10000 Zagreb, CroatiaInstitute of Physics, Bijenička cesta 46, 10000 Zagreb, CroatiaInstitute of Physics, Bijenička cesta 46, 10000 Zagreb, CroatiaPhotonics and Quantum Optics Unit, Centre of Excellence for Advanced Materials and Sensing Devices, Institut Ruđer Bošković, Bijenička cesta 54, 10000 Zagreb, CroatiaInstitute of Physics, Bijenička cesta 46, 10000 Zagreb, CroatiaIn the image plane configurations frequently used in digital holographic microscopy (DHM) systems, interference patterns are captured by a photo-sensitive array detector located at the image plane of an input object. The object information in these patterns is localized and thus extremely sensitive to phase errors caused by nonlinear hologram recordings (grating profiles are either square or saturated sinusoidal) or inadequate sampling regarding the information coverage (undersampled around the Nyquist frequency or arbitrarily oversampled). Here, we propose a solution for both hologram recording problems through implementing a photon-counting detector (PCD) mounted on a motorized XY translation stage. In such a way, inherently linear (because of a wide dynamic range of PCD) and optimum sampled (due to adjustable steps) digital holograms in the image plane configuration are recorded. Optimum sampling is estimated based on numerical analysis. The validity of the proposed approach is confirmed experimentally.https://www.mdpi.com/2304-6732/9/2/68holographydigital holographyphoton-countingNyquist sampling |
| spellingShingle | Nazif Demoli Denis Abramović Ognjen Milat Mario Stipčević Hrvoje Skenderović Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy Photonics holography digital holography photon-counting Nyquist sampling |
| title | Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy |
| title_full | Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy |
| title_fullStr | Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy |
| title_full_unstemmed | Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy |
| title_short | Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy |
| title_sort | linearity and optimum sampling in photon counting digital holographic microscopy |
| topic | holography digital holography photon-counting Nyquist sampling |
| url | https://www.mdpi.com/2304-6732/9/2/68 |
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