Broadband Terahertz Quantum Cascade Laser Dual‐Comb Sources under Off‐Resonant Microwave Injection. Issue 10 (5th October 2022)

• Record Type: Journal Article
• Authors: Liao, Xiaoyu; Li, Ziping; Zhou, Kang; Guan, Wen; Zhao, Yiran; Wang, Chenjie; Wan, Wenjian; Yang, Sijia; Zhang, Zhenzhen; Wang, Chang; Cao, Juncheng; Zeng, Heping; Li, Hua
• Is Part Of: Advanced photonics research. Volume 3:Issue 10(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-05
• Subjects: Photonics -- Periodicals; 621.36505
• DOI: 10.1002/adpr.202270036
• Languages: English
• ISSNs: 2699-9293

Abstract

Abstract : Dual‐Comb Sources In article number 2100361, Juncheng Cao, Heping Zeng, and Hua Li and co‐workers experimentally demonstrate broadband quantum cascade laser dual‐comb sources emitting in the terahertz frequency range by employing an off‐resonant microwave injection. A numerical analysis based on a rate equation model reveals that the wider lasing bandwidth and a higher degree of phase matching resulted from the off‐resonant injection can be the main reasons for the observed broadband dual‐comb operation. The demonstrated technique can be further adopted in other laser systems to broaden the spectral bandwidth.