On-chip, self-detected terahertz dual-comb source
On-chip, self-detected terahertz dual-comb source
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DOI：
10.1063/1.4948358
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发表时间：
2016-04-25
影响因子：
4
通讯作者：
Faist, Jerome
中科院分区：
文献类型：
--
作者：
Rosch, Markus;Scalari, Giacomo;Faist, Jerome
我们提出了一个直接产生的太赫兹（THz）频率的片上双梳状源。利用量子级联有源区的独特特性，利用其中一个梳作为探测器，对两个自由运行的太赫兹量子级联激光器的多外差拍频信号进行了电学测量。对应于630 GHz的频谱带宽，可以检测多达30种模式，这是双梳状配置的可用带宽。多外差信号被用来研究梳状模的等距，在2.5THz的载波频率下显示出10（-12）的精度。由AIP出版社出版。
We present a directly generated on-chip dual-comb source at terahertz (THz) frequencies. The multi-heterodyne beating signal of two free-running THz quantum cascade laser frequency combs is measured electrically using one of the combs as a detector, fully exploiting the unique characteristics of quantum cascade active regions. Up to 30 modes can be detected corresponding to a spectral bandwidth of 630 GHz, being the available bandwidth of the dual comb configuration. The multi-heterodyne signal is used to investigate the equidistance of the comb modes showing an accuracy of 10(-12) at the carrier frequency of 2.5 THz. Published by AIP Publishing.