QCL-based frequency metrology from the mid-infrared to the THz range: a review

Nanophotonics

article

Luigi Consolino¹  Francesco Cappelli¹  Mario Siciliani de Cumis²  Paolo De Natale¹ 

[1] Istituto Nazionale di Ottica;Agenzia Spaziale Italiana, ASI, Contrada Terlecchia snc

关键词: frequency metrology;    quantum cascade lasers;   

DOI  :  10.1515/nanoph-2018-0076

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Quantum cascade lasers (QCLs) are becoming a key tool for plenty of applications, from the mid-infrared (mid-IR) to the THz range. Progress in related areas, such as the development of ultra-low-loss crystalline microresonators, optical frequency standards, and optical fiber networks for time and frequency dissemination, is paving the way for unprecedented applications in many fields. For most demanding applications, a thorough control of QCLs emission must be achieved. In the last few years, QCLs’ unique spectral features have been unveiled, while multifrequency QCLs have been demonstrated. Ultra-narrow frequency linewidths are necessary for metrological applications, ranging from cold molecules interaction and ultra-high sensitivity spectroscopy to infrared/THz metrology. A review of the present status of research in this field is presented, with a view of perspectives and future applications.

【 授权许可】

CC BY