External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices.
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Kindness SJ, et al. Among authors: wallis r.
Sci Rep. 2017 Aug 9;7(1):7657. doi: 10.1038/s41598-017-07943-w.
Sci Rep. 2017.
PMID: 28794444
Free PMC article.