Markmann, S, Nong, H, Pal, S et al. (9 more authors) (2017) Two-dimensional coherent spectroscopy of a THz quantum cascade laser: observation of multiple harmonics. Optics Express, 25 (18). pp. 21753-21761. ISSN 1094-4087
Abstract
Two-dimensional spectroscopy is performed on a terahertz (THz) frequency quantum cascade laser (QCL) with two broadband THz pulses. Gain switching is used to amplify the first THz pulse and the second THz pulse is used to probe the system. Fourier transforms are taken with respect to the delay time between the two THz pulses and the sampling time of the THz probe pulse. The two-dimensional spectrum consists of three peaks at (ωτ = 0, ωt = ω0), (ωτ = ω0, ωt = ω0), and (ωτ = 2ω0, ωt = ω0) where ω0 denotes the lasing frequency. The peak at ωτ = 0 represents the response of the probe to the zero-frequency (rectified) component of the instantaneous intensity and can be used to measure the gain recovery.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/J017671/1 EU - European Union GA 665158 Royal Society WM150029 |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Sep 2017 15:07 |
Last Modified: | 29 Aug 2018 00:39 |
Published Version: | https://www.osapublishing.org/oe/abstract.cfm?uri=... |
Status: | Published |
Publisher: | Optical Society of America (OSA) |
Identification Number: | 10.1364/OE.25.021753 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:121538 |