Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System
Differential interference contrast microscopy systems demonstrate the phase (optical path) rather than the amplitude of a sample. Previous studies have usually approximated the optical path difference produced by the Normarski prism. We derive the mathematical expression for the optical path differe...
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MDPI AG
2023-06-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/6/678 |
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| author | Fei Li Tingyu Zhao |
| author_facet | Fei Li Tingyu Zhao |
| author_sort | Fei Li |
| collection | DOAJ |
| description | Differential interference contrast microscopy systems demonstrate the phase (optical path) rather than the amplitude of a sample. Previous studies have usually approximated the optical path difference produced by the Normarski prism. We derive the mathematical expression for the optical path difference produced by the incident light at any position of the Nomarski prism. As a result, the optical path difference introduced by the differential interference contrast microscope can be calculated. Moreover, the optical path difference is linearly related to the position of the incident light. In addition, the differential interference contrast microscopy system uses a composite light source, while previous studies were basically performed at a single wavelength. The standard wavelengths d (656 nm), F (587 nm), and C (486 nm) are taken as examples to analyze the relationship between the interference color change of the observation surface under the superposition of different wavelengths and the prism wedge angle when the prism moves. When the prism moves the same distance, the larger the prism wedge Angle is, the faster the interference color change is. The analysis based on practical considerations in this paper is believed to provide a method for studying Nomarski prisms. |
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| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T02:02:33Z |
| publishDate | 2023-06-01 |
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| series | Photonics |
| spelling | doaj.art-cbc2451054ac4d83b75016c9ff7df9d92023-11-18T12:08:12ZengMDPI AGPhotonics2304-67322023-06-0110667810.3390/photonics10060678Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy SystemFei Li0Tingyu Zhao1Department of Physics, Key Laboratory of Optical Field Manipulation of Zhejiang Province, Zhejiang Sci-Tech University, 928 2nd Street, Hangzhou 310018, ChinaDepartment of Physics, Key Laboratory of Optical Field Manipulation of Zhejiang Province, Zhejiang Sci-Tech University, 928 2nd Street, Hangzhou 310018, ChinaDifferential interference contrast microscopy systems demonstrate the phase (optical path) rather than the amplitude of a sample. Previous studies have usually approximated the optical path difference produced by the Normarski prism. We derive the mathematical expression for the optical path difference produced by the incident light at any position of the Nomarski prism. As a result, the optical path difference introduced by the differential interference contrast microscope can be calculated. Moreover, the optical path difference is linearly related to the position of the incident light. In addition, the differential interference contrast microscopy system uses a composite light source, while previous studies were basically performed at a single wavelength. The standard wavelengths d (656 nm), F (587 nm), and C (486 nm) are taken as examples to analyze the relationship between the interference color change of the observation surface under the superposition of different wavelengths and the prism wedge angle when the prism moves. When the prism moves the same distance, the larger the prism wedge Angle is, the faster the interference color change is. The analysis based on practical considerations in this paper is believed to provide a method for studying Nomarski prisms.https://www.mdpi.com/2304-6732/10/6/678differential interference contrastNomarski prismplane of apparent splittingsplitting angle |
| spellingShingle | Fei Li Tingyu Zhao Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System Photonics differential interference contrast Nomarski prism plane of apparent splitting splitting angle |
| title | Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System |
| title_full | Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System |
| title_fullStr | Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System |
| title_full_unstemmed | Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System |
| title_short | Study of the Interference Color with Nomarski Prism Wedge Angle in a Differential Interference Contrast Microscopy System |
| title_sort | study of the interference color with nomarski prism wedge angle in a differential interference contrast microscopy system |
| topic | differential interference contrast Nomarski prism plane of apparent splitting splitting angle |
| url | https://www.mdpi.com/2304-6732/10/6/678 |
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