期刊论文详细信息
Nanophotonics
Quantum Cascade Laser Frequency Combs
article
Jérôme Faist1  Gustavo Villares1  Giacomo Scalari1  Markus Rösch1  Christopher Bonzon1  Andreas Hugi2  Mattias Beck1 
[1] Institute for Quantum Electronics;IRsweep GmbH
关键词: spectroscopy;    mid-infrared;    dual-comb;    multiheterodyne;   
DOI  :  10.1515/nanoph-2016-0015
学科分类:社会科学、人文和艺术(综合)
来源: De Gruyter
PDF
【 摘 要 】

It was recently demonstrated that broadband quantum cascade lasers can operate as frequency combs. As such, they operate under direct electrical pumping at both mid-infrared and THz frequencies, making them very attractive for dual-comb spectroscopy. Performance levels are continuously improving, with average powers over 100mW and frequency coverage of 100 cm -1 in the mid-infrared region. In the THz range, 10mW of average power and 600 GHz of frequency coverage are reported. As a result of the very short upper state lifetime of the gain medium, the mode proliferation in these sources arises from four-wave mixing rather than saturable absorption. As a result, their optical output is characterized by the tendency of small intensity modulation of the output power, and the relative phases of the modes to be similar to the ones of a frequency modulated laser. Recent results include the proof of comb operation down to a metrological level, the observation of a Schawlow-Townes broadened linewidth, as well as the first dual-comb spectroscopy measurements. The capability of the structure to integrate monothically nonlinear optical elements as well as to operate as a detector shows great promise for future chip integration of dual-comb systems.

【 授权许可】

CC BY   

【 预 览 】
附件列表
Files Size Format View
RO202107200003922ZK.pdf 25501KB PDF download
  文献评价指标  
  下载次数:3次 浏览次数:0次