{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T20:06:23Z","timestamp":1785528383484,"version":"3.56.0"},"reference-count":24,"publisher":"Optica Publishing Group","issue":"23","license":[{"start":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T00:00:00Z","timestamp":1785456000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T00:00:00Z","timestamp":1785456000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["61405134"],"award-info":[{"award-number":["61405134"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["61340007"],"award-info":[{"award-number":["61340007"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"National Defense Basic Scientific Research","award":["CKY2018414C013"],"award-info":[{"award-number":["CKY2018414C013"]}]},{"DOI":"10.13039\/501100004608","name":"Natural Science Foundation of Jiangsu Province","doi-asserted-by":"crossref","award":["BK20161512"],"award-info":[{"award-number":["BK20161512"]}],"id":[{"id":"10.13039\/501100004608","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100012246","name":"Priority Academic Program Development of Jiangsu Higher Education Institutions","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100012246","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Suzhou Basic Research Project","award":["SJC2023003"],"award-info":[{"award-number":["SJC2023003"]}]},{"name":"National Pre-research Project of Suzhou City University","award":["2024SGY012"],"award-info":[{"award-number":["2024SGY012"]}]},{"name":"National Pre-research Project of Suzhou City University","award":["35502X0125"],"award-info":[{"award-number":["35502X0125"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Appl. Opt."],"published-print":{"date-parts":[[2026,8,10]]},"abstract":"<jats:p>\n                    Current confocal endoscopy techniques have difficulties in achieving high spectral resolution imaging of lesion cell\n                    <jats:italic toggle=\"yes\">in vivo<\/jats:italic>\n                    , which significantly hinders the early accurate diagnosis. In this paper, a novel, to our knowledge, metalens-based imaging spectrometer (MLIS) with the capability of obtaining both a high resolution and a high dispersion linearity in a compact structure for confocal endoscopy imaging, is proposed. First, the ratio of the focal length to dispersion width of the MLIS is studied to achieve both high dispersion linearity and high spatial resolution imaging. Then, to realize a high spectral resolution, how the phase distribution of the dispersive metalens affects the dispersion width of the system is analytically studied. Moreover, the polynomial terms of the phase distribution are further studied to balance the astigmatism and coma aberration of MLIS. Accordingly, an MLIS with only 6mm\u00d72.4mm diameter in volume in the wavelength band from 780 to 860\u00a0nm, achieving both a high dispersion linearity and a high spectral resolution of 0.4\u00a0nm, is proposed. It paves the way for developing an MLIS with high resolution and high dispersion linearity for lesion cell diagnosis\n                    <jats:italic toggle=\"yes\">in vivo<\/jats:italic>\n                    .\n                  <\/jats:p>","DOI":"10.1364\/ao.591906","type":"journal-article","created":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T13:00:09Z","timestamp":1783688409000},"page":"7692","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Metalens-based imaging spectrometer for confocal endoscopy imaging"],"prefix":"10.1364","volume":"65","author":[{"given":"Keke","family":"Zhang","sequence":"first","affiliation":[{"name":"Soochow University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-8200-0430","authenticated-orcid":true,"given":"Yanhong","family":"Gao","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/025jsyk19","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4123-2759","authenticated-orcid":true,"given":"Yiqun","family":"Ji","sequence":"additional","affiliation":[{"name":"Soochow University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weitian","family":"Chen","sequence":"additional","affiliation":[{"name":"Soochow University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuning","family":"Dong","sequence":"additional","affiliation":[{"name":"Soochow University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,7,31]]},"reference":[{"key":"ao-65-23-7692-R1","doi-asserted-by":"publisher","first-page":"905","DOI":"10.21037\/qims.2019.05.16","type":"journal-article","volume":"9","author":"Li","year":"2019","journal-title":"Quant. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}