Direct measurement of carbon nanotube temperature between fiber ferrules as a universal tool for saturable absorber stability investigation

Abstract

Single-walled carbon nanotubes (SWCNTs) are widely explored for the ultrashort pulse generation in the fiber lasers enabled by pronounced saturable absorption (SA) effect. Despite many remarkable results demonstrated in the area, degradation of the samples inside the laser cavity limits the widespread use of SWCNT-SA. In the present work, we investigate the degradation mechanism by measuring the temperature of the carbon nanotubes in an operating laser cavity in accordance with the Raman G-band position. We identify the process behind the sample degradation by comparing the burning temperature of the sample with results of thermogravimetric analysis. We apply this approach for the SWCNTs in polyvinyl alcohol polymer matrix and polymer-free SWCNT thin film and demonstrate that these samples undergo different degradation mechanism. Proposed technique provides a useful instrument for optimization of SWCNT-SA for desired ultrafast laser generation.

Publication DOI: https://doi.org/10.1016/j.carbon.2021.08.032
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology
College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Electrical, Electronic & Power Engineering
Additional Information: © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Funding: A.A.M. and A.G.N. thanks RFBR research project № 20-32-90233 for support in experimental part of the work. D.V.K. thanks Russian Science Foundation grant No. 20-73-10256 for support in synthesis of aerosol SWCNT films. V.D. thanks the Russian Science Foundation (Grant No. 17-72-30006) for the support in characterization of pulse laser generation.
Uncontrolled Keywords: Carbon nanotubes,Saturable absorption,Thermal stability,Ultra-fast lasers,Chemistry(all),Materials Science(all)
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Related URLs: https://linking ... 008622321008241 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2021-10-30
Published Online Date: 2021-08-16
Accepted Date: 2021-08-13
Authors: Galiakhmetova, Diana
Gladush, Yuriy
Mkrtchyan, Aram
Fedorov, Fedor S.
Khabushev, Eldar
Krasnikov, Dmitry
Chinnambedu-Murugesan, Raghavan (ORCID Profile 0000-0003-3521-4255)
Manuylovich, Egor
Dvoyrin, Vladislav (ORCID Profile 0000-0001-7358-1641)
Rozhin, Alex (ORCID Profile 0000-0003-2271-8227)
Rümmeli, Mark
Alyatkin, Sergey
Lagoudakis, Pavlos
Nasibulin, Albert G.

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Version: Accepted Version

Access Restriction: Restricted to Repository staff only until 16 August 2022.

License: Creative Commons Attribution Non-commercial No Derivatives


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