Yue Shen, Anthony D. Kim, Mohammad Shahili, C. Curwen, S. Addamane, J. Reno, B. Williams
{"title":"THz Time-Domain Characterization of Amplifying Quantum-Cascade Metasurface","authors":"Yue Shen, Anthony D. Kim, Mohammad Shahili, C. Curwen, S. Addamane, J. Reno, B. Williams","doi":"10.1109/IRMMW-THz46771.2020.9370982","DOIUrl":null,"url":null,"abstract":"We present direct measurements using reflection-mode terahertz (THz) time domain spectroscopy (TDS) of amplifying quantum-cascade (QC) metasurfaces used in THz QC-VECSELs. Devices resonant at 2.2 and 2.5 THz are studied under different bias currents, and exhibit gain-induced partial compensation of losses.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"51 1","pages":"1-1"},"PeriodicalIF":0.0000,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370982","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
We present direct measurements using reflection-mode terahertz (THz) time domain spectroscopy (TDS) of amplifying quantum-cascade (QC) metasurfaces used in THz QC-VECSELs. Devices resonant at 2.2 and 2.5 THz are studied under different bias currents, and exhibit gain-induced partial compensation of losses.