Gurpreet Singh, Trishala Mitra, Søren P Madsen, Aurélien Dantan
{"title":"Highly reflective and high-Q thin resonant subwavelength gratings","authors":"Gurpreet Singh, Trishala Mitra, Søren P Madsen, Aurélien Dantan","doi":"10.1088/2515-7647/ad70e7","DOIUrl":null,"url":null,"abstract":"We theoretically investigate the design of thin subwavelength gratings possessing high-reflectivity and high-<italic toggle=\"yes\">Q</italic> resonances when illuminated at normal incidence by a Gaussian beam. We compare the performances of single-period and dual-period rectangular gratings using finite element method-based optimization and predict a close to two orders of magnitude improvement (×90) in their transmission loss-linewidth product, which is the relevant figure of merit for e.g. resonant mirror-based microcavity applications.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"62 1","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Physics-Photonics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/2515-7647/ad70e7","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
We theoretically investigate the design of thin subwavelength gratings possessing high-reflectivity and high-Q resonances when illuminated at normal incidence by a Gaussian beam. We compare the performances of single-period and dual-period rectangular gratings using finite element method-based optimization and predict a close to two orders of magnitude improvement (×90) in their transmission loss-linewidth product, which is the relevant figure of merit for e.g. resonant mirror-based microcavity applications.
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