{"title":"Self-Detecting Mid-Infrared Dual-Comb Spectroscopy Based on High-Speed Injection-Locked Quantum Cascade Lasers","authors":"Yu Ma, Dapeng Wu, Ruixin Huang, Shichen Zhang, Binru Zhou, Zejun Ma, Yongqiang Sun, Junqi Liu, Ning Zhuo, Jinchuan Zhang, Shenqiang Zhai, Shuman Liu, Fengqi Liu, Manijeh Razeghi, Quanyong Lu","doi":"10.1002/adpr.70036","DOIUrl":null,"url":null,"abstract":"<p>\n <b>Dual-Comb Spectroscopy</b>\n </p><p>In article number 2500062, Quanyong Lu and co-workers demonstrate compact self-detecting dual-comb spectroscopy based on dispersion-engineered, high-speed packaged QCLs under coherent injection locking. The high-speed design enables the QCL comb to serve as a high-bandwidth photodetector in the DCS system without the use of external detectors. Broad multiheterodyne signals and narrow dual-comb tooth are recorded from the self-detecting DCS system, which show the unique advantages in intermode coherence, spectral broadening, and system simplification.\n <figure>\n <div><picture>\n <source></source></picture><p></p>\n </div>\n </figure>\n </p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 7","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.70036","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Photonics Research","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adpr.70036","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
Dual-Comb Spectroscopy
In article number 2500062, Quanyong Lu and co-workers demonstrate compact self-detecting dual-comb spectroscopy based on dispersion-engineered, high-speed packaged QCLs under coherent injection locking. The high-speed design enables the QCL comb to serve as a high-bandwidth photodetector in the DCS system without the use of external detectors. Broad multiheterodyne signals and narrow dual-comb tooth are recorded from the self-detecting DCS system, which show the unique advantages in intermode coherence, spectral broadening, and system simplification.
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