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

Abstract

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{sup −12} at the carrier frequency of 2.5 THz.

Authors:
; ; ; ; ;  [1]
  1. ETH Zurich, Institute of Quantum Electronics, Auguste-Piccard-Hof 1, Zurich 8093 (Switzerland)
Publication Date:
OSTI Identifier:
22590669
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 17; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; CARRIERS; CONFIGURATION; GHZ RANGE; LASERS; SIGNALS

Citation Formats

Rösch, Markus, Scalari, Giacomo, Villares, Gustavo, Bosco, Lorenzo, Beck, Mattias, and Faist, Jérôme. On-chip, self-detected terahertz dual-comb source. United States: N. p., 2016. Web. doi:10.1063/1.4948358.
Rösch, Markus, Scalari, Giacomo, Villares, Gustavo, Bosco, Lorenzo, Beck, Mattias, & Faist, Jérôme. On-chip, self-detected terahertz dual-comb source. United States. https://doi.org/10.1063/1.4948358
Rösch, Markus, Scalari, Giacomo, Villares, Gustavo, Bosco, Lorenzo, Beck, Mattias, and Faist, Jérôme. 2016. "On-chip, self-detected terahertz dual-comb source". United States. https://doi.org/10.1063/1.4948358.
@article{osti_22590669,
title = {On-chip, self-detected terahertz dual-comb source},
author = {Rösch, Markus and Scalari, Giacomo and Villares, Gustavo and Bosco, Lorenzo and Beck, Mattias and Faist, Jérôme},
abstractNote = {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{sup −12} at the carrier frequency of 2.5 THz.},
doi = {10.1063/1.4948358},
url = {https://www.osti.gov/biblio/22590669}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 17,
volume = 108,
place = {United States},
year = {Mon Apr 25 00:00:00 EDT 2016},
month = {Mon Apr 25 00:00:00 EDT 2016}
}