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Opt."],"published-print":{"date-parts":[[2024,2,20]]},"abstract":"<jats:p>Current imaging spectrometers are developed towards a large field of view (FOV) as well as high resolution to obtain more spatial and spectral information. However, imaging spectrometers with a large FOV and high resolution produce a huge image data cube, which increases the difficulty of spectral data acquisition and processing. In practical applications, it is more reasonable and helpful to identify different targets within a large FOV with different spectral resolutions. In this paper, a compact multi-spectral-resolution Wynne\u2013Offner imaging spectrometer with a long slit is proposed by introducing a special diffraction grating with multi-groove densities at different areas. With the increasing of the groove density and the slit length, the astigmatism of the Wynne\u2013Offner imaging spectrometer increases sharply. Therefore, the relationships between the astigmatism and both the groove density and slit length are studied. Moreover, a holographic grating is introduced. The holographic aberrations produced are utilized to balance the residual astigmatism of the imaging spectrometer. The design results show that the system is only 60mm\u00d7115mm\u00d7103mm in volume but achieves both a long slit of 20\u00a0mm in length and a waveband from 400\u00a0nm to 760\u00a0nm with three kinds of spectral resolutions of 2\u00a0nm, 1\u00a0nm, and 0.5\u00a0nm. The designed compact multi-spectral-resolution Wynne\u2013Offner imaging spectrometer can be widely applied in the fields of crop classification and pest detection, which require both a large FOV and multiple spectral resolutions.<\/jats:p>","DOI":"10.1364\/ao.517374","type":"journal-article","created":{"date-parts":[[2024,1,26]],"date-time":"2024-01-26T11:00:06Z","timestamp":1706266806000},"page":"1577","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Compact multi-spectral-resolution Wynne\u2013Offner imaging spectrometer with a long slit"],"prefix":"10.1364","volume":"63","author":[{"given":"Xingyun","family":"Zhang","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05t8y2r12","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanhong","family":"Gao","sequence":"additional","affiliation":[{"name":"Suzhou City University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yiqun","family":"Ji","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05t8y2r12","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anwei","family":"Feng","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05t8y2r12","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shijia","family":"Zhao","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05t8y2r12","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chinhua","family":"Wang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05t8y2r12","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2024,2,13]]},"reference":[{"key":"ao-63-6-1577-R1","doi-asserted-by":"publisher","first-page":"5768","DOI":"10.1364\/OE.384058","volume":"28","author":"Xu","year":"2020","journal-title":"Opt. 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