{"title":"High-precision THz spectrum analyzer based on an unstabilized frequency comb","authors":"H. Fuser, R. Judaschke, M. Bieler","doi":"10.1109/IRMMW-THZ.2011.6104790","DOIUrl":null,"url":null,"abstract":"We perform high-precision frequency measurements in the THz spectral region using an unstabilized frequency comb, which acts as a transfer oscillator. To correct the beating signal resulting from the THz source and one comb line of the rectified optical comb for fluctuations of the laser repetition rate, a simple and flexible algorithm is used. By this, we achieve an accuracy of the measurement setup as high as 9·10−14 for a 100 GHz test source. This is an improvement of two orders of magnitude compared to previously reported precision measurements in this frequency range employing femtosecond lasers.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IRMMW-THZ.2011.6104790","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We perform high-precision frequency measurements in the THz spectral region using an unstabilized frequency comb, which acts as a transfer oscillator. To correct the beating signal resulting from the THz source and one comb line of the rectified optical comb for fluctuations of the laser repetition rate, a simple and flexible algorithm is used. By this, we achieve an accuracy of the measurement setup as high as 9·10−14 for a 100 GHz test source. This is an improvement of two orders of magnitude compared to previously reported precision measurements in this frequency range employing femtosecond lasers.