作者
Francesco P Mezzapesa, Katia Garrasi, Valentino Pistore, Lianhe Li, A Giles Davies, Edmund H Linfield, Sukhdeep Dhillon, Miriam S Vitiello
发表日期
2019/9/1
研讨会论文
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
页码范围
1-2
出版商
IEEE
简介
We demonstrate THz optical frequency comb (FC) operation based on ultra-broadband, record dynamic range Quantum Cascade Lasers (QCLs) which exploit a heterogeneous active region design to achieve low and flat chromatic dispersion at the center of the gain curve. By implementing a Gires-Tournois Interferometer (GTI), as tightly coupled at one end of the QCL cavity, we provide lithographically-independent control of the free-running coherence properties of such THz-QCL FC and attain wide dispersion compensation regions, where stable and narrow (~3 kHz linewidth) single beatnotes extend over an operation range that is significantly larger than that of dispersion-dominated bare laser cavity counterparts.
学术搜索中的文章
FP Mezzapesa, K Garrasi, V Pistore, L Li, AG Davies… - 2019 44th International Conference on Infrared …, 2019