Imperial College London
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DrFeliceTorrisi

Faculty of Natural Sciences, Department of Chemistry

Senior Lecturer in Chemistry of Two-Dimensional Materials
 
 
 
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Contact

 

+44 (0)20 7594 5818f.torrisi

 
 
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Location

 

401AMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bianchi:2017:10.1038/ncomms15763,
author = {Bianchi, V and Carey, T and Viti, L and Li, L and Linfield, EH and Davies, AG and Tredicucci, A and Yoon, D and Karagiannidis, PG and Lombardi, L},
doi = {10.1038/ncomms15763},
journal = {Nature Communications},
title = {Terahertz saturable absorbers from liquid phase exfoliation of graphite},
url = {http://dx.doi.org/10.1038/ncomms15763},
volume = {8},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Saturable absorbers (SA) operating at terahertz (THz) frequencies can open new frontiers in the development of passively mode-locked THz micro-sources. Here we report the fabrication of THz SAs by transfer coating and inkjet printing single and few-layer graphene films prepared by liquid phase exfoliation of graphite. Open-aperture z-scan measurements with a 3.5 THz quantum cascade laser show a transparency modulation ∼80%, almost one order of magnitude larger than that reported to date at THz frequencies. Fourier-transform infrared spectroscopy provides evidence of intraband-controlled absorption bleaching. These results pave the way to the integration of graphene-based SA with electrically pumped THz semiconductor micro-sources, with prospects for applications where excitation of specific transitions on short time scales is essential, such as time-of-flight tomography, coherent manipulation of quantum systems, time-resolved spectroscopy of gases, complex molecules and cold samples and ultra-high speed communications, providing unprecedented compactness and resolution.
AU  - Bianchi,V
AU  - Carey,T
AU  - Viti,L
AU  - Li,L
AU  - Linfield,EH
AU  - Davies,AG
AU  - Tredicucci,A
AU  - Yoon,D
AU  - Karagiannidis,PG
AU  - Lombardi,L
DO  - 10.1038/ncomms15763
PY  - 2017///
SN  - 2041-1723
TI  - Terahertz saturable absorbers from liquid phase exfoliation of graphite
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/ncomms15763
UR  - https://www.ncbi.nlm.nih.gov/pubmed/28643788
UR  - http://hdl.handle.net/10044/1/69388
VL  - 8
ER  -
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