Doğukan Apaydın, Hjalmar Andersson, Lukas Uhlig, Sarina Graupeter, Joachim Ciers, Giulia Cardinali, Erik Strandberg, Tim Wernicke, Michael Kneissl, Ulrich Theodor Schwarz, Philippe Tassin, Åsa Haglund
{"title":"Deep‐UV Photonic Crystal Surface‐Emitting Lasers","authors":"Doğukan Apaydın, Hjalmar Andersson, Lukas Uhlig, Sarina Graupeter, Joachim Ciers, Giulia Cardinali, Erik Strandberg, Tim Wernicke, Michael Kneissl, Ulrich Theodor Schwarz, Philippe Tassin, Åsa Haglund","doi":"10.1002/lpor.202500271","DOIUrl":null,"url":null,"abstract":"Today's ultraviolet lasers are bulky, expensive, have low power‐conversion efficiency, and usually suffer from poor beam quality. Semiconductor lasers have addressed these issues in the visible and infrared parts of the electromagnetic spectrum; but in the ultraviolet, they are just starting to see the light of day. Edge‐emitting semiconductor lasers are the only ones demonstrated under electrical injection in the deep‐ultraviolet (<280 nm) and they inherently suffer from poor beam qualities, multiple modes, and catastrophic optical damage to the mirror. The first deep‐UV photonic crystal surface‐emitting lasers are demonstrated here. The devices show single‐mode emission around 279 nm with less than 1 beam divergence. They require a specific design to overcome optical scattering and the low refractive index that otherwise prohibits a 2D standing optical field. The optically pumped deep‐ultraviolet photonic crystal surface‐emitting lasers offer drastically improved beam quality and provide an important step toward low‐divergent, watt‐class, electrically‐driven UV PCSELs.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"114 1","pages":""},"PeriodicalIF":10.0000,"publicationDate":"2025-10-10","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.202500271","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
Today's ultraviolet lasers are bulky, expensive, have low power‐conversion efficiency, and usually suffer from poor beam quality. Semiconductor lasers have addressed these issues in the visible and infrared parts of the electromagnetic spectrum; but in the ultraviolet, they are just starting to see the light of day. Edge‐emitting semiconductor lasers are the only ones demonstrated under electrical injection in the deep‐ultraviolet (<280 nm) and they inherently suffer from poor beam qualities, multiple modes, and catastrophic optical damage to the mirror. The first deep‐UV photonic crystal surface‐emitting lasers are demonstrated here. The devices show single‐mode emission around 279 nm with less than 1 beam divergence. They require a specific design to overcome optical scattering and the low refractive index that otherwise prohibits a 2D standing optical field. The optically pumped deep‐ultraviolet photonic crystal surface‐emitting lasers offer drastically improved beam quality and provide an important step toward low‐divergent, watt‐class, electrically‐driven UV PCSELs.
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.