On-chip, self-detected terahertz dual-comb source

被引：69

作者：

Rosch, Markus ^{[1
]}

Scalari, Giacomo ^{[1
]}

Villares, Gustavo ^{[1
]}

Bosco, Lorenzo ^{[1
]}

Beck, Mattias ^{[1
]}

Faist, Jerome ^{[1
]}

机构：

[1] ETH, Inst Quantum Elect, Auguste Piccard Hof 1, CH-8093 Zurich, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 17期

基金：

瑞士国家科学基金会;

关键词：

QUANTUM-CASCADE-LASER; TIME-DOMAIN SPECTROSCOPY; FREQUENCY-COMB; EXPLOSIVES; FEEDBACK;

D O I：

10.1063/1.4948358

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

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页数：5

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