Giant modal gain coefficients in colloidal II-VI nanoplatelets

Modal gain coefficient is a key figure of merit for a laser material. Previously, net modal gain coefficients larger than a few thousand cm-1 were achieved in II-VI and III-V semiconductor gain media, but this required operation at cryogenic temperatures. In this work, using pump-fluence-dependent v...

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Main Authors: Guzelturk, Burak, Pelton, Matthew, Olutas, Murat, Demir, Hilmi Volkan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/143624
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1436242020-09-14T09:14:57Z Giant modal gain coefficients in colloidal II-VI nanoplatelets Guzelturk, Burak Pelton, Matthew Olutas, Murat Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Materials Science and Engineering School of Physical and Mathematical Sciences Engineering::Materials Colloidal Nanoplatelets CdSe Modal gain coefficient is a key figure of merit for a laser material. Previously, net modal gain coefficients larger than a few thousand cm-1 were achieved in II-VI and III-V semiconductor gain media, but this required operation at cryogenic temperatures. In this work, using pump-fluence-dependent variable-stripe-length measurements, we show that colloidal CdSe nanoplatelets enable giant modal gain coefficients at room temperature up to 6600 cm-1 under pulsed optical excitation. Furthermore, we show that exceptional gain performance is common to the family of CdSe nanoplatelets, as shown by examining samples having different vertical thicknesses and lateral areas. Overall, colloidal II-VI nanoplatelets with superior optical gain properties are promising for a broad range of applications, including high-speed light amplification and loss compensation in plasmonic photonic circuits. Accepted version 2020-09-14T09:12:31Z 2020-09-14T09:12:31Z 2019 Journal Article Guzelturk, B., Pelton, M., Olutas, M., & Demir, H. V. (2019). Giant modal gain coefficients in colloidal II-VI nanoplatelets. Nano Letters, 19(1), 277-282. doi:10.1021/acs.nanolett.8b03891 1530-6992 https://hdl.handle.net/10356/143624 10.1021/acs.nanolett.8b03891 30539638 1 19 277 282 en Nano Letters This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.nanolett.8b03891 application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Materials
Colloidal Nanoplatelets
CdSe
spellingShingle Engineering::Materials
Colloidal Nanoplatelets
CdSe
Guzelturk, Burak
Pelton, Matthew
Olutas, Murat
Demir, Hilmi Volkan
Giant modal gain coefficients in colloidal II-VI nanoplatelets
description Modal gain coefficient is a key figure of merit for a laser material. Previously, net modal gain coefficients larger than a few thousand cm-1 were achieved in II-VI and III-V semiconductor gain media, but this required operation at cryogenic temperatures. In this work, using pump-fluence-dependent variable-stripe-length measurements, we show that colloidal CdSe nanoplatelets enable giant modal gain coefficients at room temperature up to 6600 cm-1 under pulsed optical excitation. Furthermore, we show that exceptional gain performance is common to the family of CdSe nanoplatelets, as shown by examining samples having different vertical thicknesses and lateral areas. Overall, colloidal II-VI nanoplatelets with superior optical gain properties are promising for a broad range of applications, including high-speed light amplification and loss compensation in plasmonic photonic circuits.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Guzelturk, Burak
Pelton, Matthew
Olutas, Murat
Demir, Hilmi Volkan
format Article
author Guzelturk, Burak
Pelton, Matthew
Olutas, Murat
Demir, Hilmi Volkan
author_sort Guzelturk, Burak
title Giant modal gain coefficients in colloidal II-VI nanoplatelets
title_short Giant modal gain coefficients in colloidal II-VI nanoplatelets
title_full Giant modal gain coefficients in colloidal II-VI nanoplatelets
title_fullStr Giant modal gain coefficients in colloidal II-VI nanoplatelets
title_full_unstemmed Giant modal gain coefficients in colloidal II-VI nanoplatelets
title_sort giant modal gain coefficients in colloidal ii-vi nanoplatelets
publishDate 2020
url https://hdl.handle.net/10356/143624
_version_ 1681058336056803328