Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-9313
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Main Title: Two-photon based pulse autocorrelation with CdSe nanoplatelets
Author(s): Quick, Michael T.
Owschimikow, Nina
Khan, Ali Hossain
Polovitsyn, Anatolii
Moreels, Iwan
Woggon, Ulrike
Achtstein, Alexander W.
Type: Article
Language Code: en
Abstract: We investigate broadband two-photon absorption autocorrelators based on II–VI semiconductor nanoplatelets as an alternative to common second harmonic generation based techniques. As compared to bulk materials the exceptionally high enhancement of two-photon absorption in these 2D structures results in very efficient two-photon absorption based autocorrelation detected via PL emission. We compare the results with TPA autocorrelation in CdS bulk as well as SHG based autocorrelation in β-barium borate. We show that CdSe nanoplatelet based autocorrelation can exceed the efficiency of conventional methods by two orders in magnitude, especially for short interaction length, and allows a precise pulse-width determination. We demonstrate that very high two-photon absorption cross sections of the nanoplatelets are the basis for this effective TPA autocorrelation. Based on our results with II–VI nanoplatelets efficient broadband autocorrelation with more than ∼100 nm bandwidth and very high sensitivity seems feasible.
URI: https://depositonce.tu-berlin.de/handle/11303/10354
http://dx.doi.org/10.14279/depositonce-9313
Issue Date: 6-Sep-2019
Date Available: 20-Nov-2019
DDC Class: 530 Physik
Subject(s): autocorrelation
two-photon absorption
semiconductor nano materials
Sponsor/Funder: EC/H2020/714876/EU/Photonics in Flatland: Band Structure Engineering of 2D Excitons in Fluorescent Colloidal Nanomaterials/PHOCONA
TU Berlin, Open-Access-Mittel - 2019
License: https://creativecommons.org/licenses/by-nc/3.0/
Journal Title: Nanoscale
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 11
Publisher DOI: 10.1039/C9NR06156H
Page Start: 17293
Page End: 17300
EISSN: 2040-3372
ISSN: 2040-3364
Appears in Collections:FG Nichtlineare Optik » Publications

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