High-resolution terahertz spectroscopy with quantum-cascade lasers

被引：31
|
作者：
Hubers, H. -W. [1 ,2 ]
Richter, H. [1 ]
Wienold, M. [1 ,2 ]
机构：
[1] German Aerosp Ctr DLR, Inst Opt Sensor Syst, Rutherfordstr 2, D-12489 Berlin, Germany
[2] Humboldt Univ, Dept Phys, Newtonstr 5, D-12489 Berlin, Germany
来源：
JOURNAL OF APPLIED PHYSICS | 2019年 / 125卷 / 15期
关键词：
HIGH-POWER; SINGLE-MODE; WIDE-BAND; FREQUENCY; THZ; FEEDBACK; OSCILLATOR; LOCKING; DESIGN;
D O I：
10.1063/1.5084105
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Terahertz (THz) quantum-cascade lasers (QCLs) are narrow band, high-power, and frequency-agile sources. These properties make them attractive for applications in high-resolution molecular and atomic spectroscopy. In the past few years, various techniques and methods regarding high-resolution spectroscopy with THz QCLs have been developed, namely, direct absorption spectroscopy, detection schemes such as wavelength and frequency modulation, differential spectroscopy, photoacoustic spectroscopy, and heterodyne spectroscopy. We briefly review the most relevant technological and methodological advances in this field, and we discuss perspectives and future directions. Published under license by AIP Publishing.
引用
收藏
页数：15
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