Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry
High resolution imaging is achieved using increasingly larger apertures and successively shorter wavelengths. Optical aperture synthesis is an important high-resolution imaging technology used in astronomy. Conventional long baseline amplitude interferometry is susceptible to uncontrollable phase fl...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Institue of Optics and Electronics, Chinese Academy of Sciences
2023-12-01
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| Series: | Opto-Electronic Advances |
| Subjects: | |
| Online Access: | https://www.oejournal.org/article/doi/10.29026/oea.2023.230017 |
| _version_ | 1797303228151365632 |
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| author | Chunyan Chu Zhentao Liu Mingliang Chen Xuehui Shao Guohai Situ Yuejin Zhao Shensheng Han |
| author_facet | Chunyan Chu Zhentao Liu Mingliang Chen Xuehui Shao Guohai Situ Yuejin Zhao Shensheng Han |
| author_sort | Chunyan Chu |
| collection | DOAJ |
| description | High resolution imaging is achieved using increasingly larger apertures and successively shorter wavelengths. Optical aperture synthesis is an important high-resolution imaging technology used in astronomy. Conventional long baseline amplitude interferometry is susceptible to uncontrollable phase fluctuations, and the technical difficulty increases rapidly as the wavelength decreases. The intensity interferometry inspired by HBT experiment is essentially insensitive to phase fluctuations, but suffers from a narrow spectral bandwidth which results in a lack of effective photons. In this study, we propose optical synthetic aperture imaging based on spatial intensity interferometry. This not only realizes diffraction-limited optical aperture synthesis in a single shot, but also enables imaging with a wide spectral bandwidth, which greatly improves the optical energy efficiency of intensity interferometry. And this method is insensitive to the optical path difference between the sub-apertures. Simulations and experiments present optical aperture synthesis diffraction-limited imaging through spatial intensity interferometry in a 100 nm spectral width of visible light, whose maximum optical path difference between the sub-apertures reaches 69λ. This technique is expected to provide a solution for optical aperture synthesis over kilometer-long baselines at optical wavelengths. |
| first_indexed | 2024-03-07T23:49:51Z |
| format | Article |
| id | doaj.art-2b34526a8b4c42719aa5e8da316a5688 |
| institution | Directory Open Access Journal |
| issn | 2096-4579 |
| language | English |
| last_indexed | 2024-03-07T23:49:51Z |
| publishDate | 2023-12-01 |
| publisher | Institue of Optics and Electronics, Chinese Academy of Sciences |
| record_format | Article |
| series | Opto-Electronic Advances |
| spelling | doaj.art-2b34526a8b4c42719aa5e8da316a56882024-02-19T08:28:38ZengInstitue of Optics and Electronics, Chinese Academy of SciencesOpto-Electronic Advances2096-45792023-12-016121910.29026/oea.2023.230017OEA-2023-0017-ChenmingliangWide-spectrum optical synthetic aperture imaging via spatial intensity interferometryChunyan Chu0Zhentao Liu1Mingliang Chen2Xuehui Shao3Guohai Situ4Yuejin Zhao5Shensheng Han6Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing 100081, ChinaShanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaNational Laboratory of Aerospace Intelligent Control Technology, Beijing 100089, ChinaShanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaBeijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing 100081, ChinaShanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaHigh resolution imaging is achieved using increasingly larger apertures and successively shorter wavelengths. Optical aperture synthesis is an important high-resolution imaging technology used in astronomy. Conventional long baseline amplitude interferometry is susceptible to uncontrollable phase fluctuations, and the technical difficulty increases rapidly as the wavelength decreases. The intensity interferometry inspired by HBT experiment is essentially insensitive to phase fluctuations, but suffers from a narrow spectral bandwidth which results in a lack of effective photons. In this study, we propose optical synthetic aperture imaging based on spatial intensity interferometry. This not only realizes diffraction-limited optical aperture synthesis in a single shot, but also enables imaging with a wide spectral bandwidth, which greatly improves the optical energy efficiency of intensity interferometry. And this method is insensitive to the optical path difference between the sub-apertures. Simulations and experiments present optical aperture synthesis diffraction-limited imaging through spatial intensity interferometry in a 100 nm spectral width of visible light, whose maximum optical path difference between the sub-apertures reaches 69λ. This technique is expected to provide a solution for optical aperture synthesis over kilometer-long baselines at optical wavelengths.https://www.oejournal.org/article/doi/10.29026/oea.2023.230017optical synthetic aperture imagingghost imagingintensity interferometry |
| spellingShingle | Chunyan Chu Zhentao Liu Mingliang Chen Xuehui Shao Guohai Situ Yuejin Zhao Shensheng Han Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry Opto-Electronic Advances optical synthetic aperture imaging ghost imaging intensity interferometry |
| title | Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry |
| title_full | Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry |
| title_fullStr | Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry |
| title_full_unstemmed | Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry |
| title_short | Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry |
| title_sort | wide spectrum optical synthetic aperture imaging via spatial intensity interferometry |
| topic | optical synthetic aperture imaging ghost imaging intensity interferometry |
| url | https://www.oejournal.org/article/doi/10.29026/oea.2023.230017 |
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