Yu-Ru Li, Yan Li, Siqing Zeng, Annan Zhao, Shunyu Yao, Mingjie Zhang, Zhaohui Li
{"title":"Lossless Phase-Change Material Enabled Wideband High-Efficiency Spatial Light Phase Modulation at Near-Infrared","authors":"Yu-Ru Li, Yan Li, Siqing Zeng, Annan Zhao, Shunyu Yao, Mingjie Zhang, Zhaohui Li","doi":"10.1002/lpor.202400293","DOIUrl":null,"url":null,"abstract":"High-efficiency spatial light phase modulation with wide operating bandwidth is highly significant yet challenging. Dynamic metasurfaces leveraging active materials with tunable optical response provide a promising solution. Current work is generally confronted with restricted operation bandwidth and diminished modulation efficiency, constrained by the limited tunable range and inherent absorption of active materials particular at optical frequency. Recently, the emergence of lossless phase-change material Sb<sub>2</sub>Se<sub>3</sub> has garnered widespread attention. Its unique characteristics, including near-zero absorption at near-infrared and a substantial refractive index contrast ≈0.93 during phase transition, enable the possibility of high-performance spatial light modulation. Pioneering studies have validated the capability of lossless phase-change metasurfaces for wavefront control, but are typically restricted to limited efficiency. Here, a hybrid phase-change metasurface utilizing over-coupled resonances supported by Sb<sub>2</sub>Se<sub>3</sub> nanoholes is proposed. For the first time in optical frequency, high-efficiency 4-level phase modulation covering over π range is experimentally demonstrated with a sizable operating bandwidth of 42 nm and a minimum reflectance of exceeding 0.5. Leveraging optically driven localized phase-transition technique, dynamic beam deflection is further demonstrated. The work validates the tremendous potential of phase-change metasurfaces in achieving advanced spatial light control, signifying significant progress for the development and application of phase-change photonic devices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":9.8000,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laser & Photonics Reviews","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1002/lpor.202400293","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
High-efficiency spatial light phase modulation with wide operating bandwidth is highly significant yet challenging. Dynamic metasurfaces leveraging active materials with tunable optical response provide a promising solution. Current work is generally confronted with restricted operation bandwidth and diminished modulation efficiency, constrained by the limited tunable range and inherent absorption of active materials particular at optical frequency. Recently, the emergence of lossless phase-change material Sb2Se3 has garnered widespread attention. Its unique characteristics, including near-zero absorption at near-infrared and a substantial refractive index contrast ≈0.93 during phase transition, enable the possibility of high-performance spatial light modulation. Pioneering studies have validated the capability of lossless phase-change metasurfaces for wavefront control, but are typically restricted to limited efficiency. Here, a hybrid phase-change metasurface utilizing over-coupled resonances supported by Sb2Se3 nanoholes is proposed. For the first time in optical frequency, high-efficiency 4-level phase modulation covering over π range is experimentally demonstrated with a sizable operating bandwidth of 42 nm and a minimum reflectance of exceeding 0.5. Leveraging optically driven localized phase-transition technique, dynamic beam deflection is further demonstrated. The work validates the tremendous potential of phase-change metasurfaces in achieving advanced spatial light control, signifying significant progress for the development and application of phase-change photonic devices.
期刊介绍:
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.