{"title":"Real-time dynamically controllable polarization holographic grating","authors":"Hong Chen , Ziyao Lyu , Changshun Wang","doi":"10.1016/j.optcom.2025.131717","DOIUrl":null,"url":null,"abstract":"<div><div>A novel real-time dynamic controllable polarization holographic grating (PHG) has been developed using an azobenzene liquid crystal film, achieved through a periodic recording-erasing process. During recording, two orthogonally polarized lights are utilized, while circularly polarized light (CPL) is used for erasing the grating. The effects of pump intensity and temperature on the PHG are investigated through a series of experiments and numerical simulations. Finally, a peak diffraction efficiency of 17.6% is observed at 80 °C and 30 mW/cm<sup>2</sup>. The photoinduced birefringence of the PHG recorded with orthogonal circular polarizations is higher than that recorded with orthogonal linear polarizations. These findings enable customized information storage within the PHG, significantly enhancing its potential applications in optical control and storage.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131717"},"PeriodicalIF":2.5000,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics Communications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030401825002457","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
A novel real-time dynamic controllable polarization holographic grating (PHG) has been developed using an azobenzene liquid crystal film, achieved through a periodic recording-erasing process. During recording, two orthogonally polarized lights are utilized, while circularly polarized light (CPL) is used for erasing the grating. The effects of pump intensity and temperature on the PHG are investigated through a series of experiments and numerical simulations. Finally, a peak diffraction efficiency of 17.6% is observed at 80 °C and 30 mW/cm2. The photoinduced birefringence of the PHG recorded with orthogonal circular polarizations is higher than that recorded with orthogonal linear polarizations. These findings enable customized information storage within the PHG, significantly enhancing its potential applications in optical control and storage.
期刊介绍：
Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.
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