Observation of polarized gain from aligned colloidal nanorods
In recent years, colloidal semiconductor nanorods have attracted great interest for polarized spontaneous emission. However, their polarized gain has not been possible to achieve so far. In this work we show the highly polarized stimulated emission from the densely packed ensembles of core-seeded na...
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sg-ntu-dr.10356-818622023-02-28T19:29:29Z Observation of polarized gain from aligned colloidal nanorods Gao, Yuan Ta, Van Duong Zhao, Xin Wang, Yue Chen, Rui Mutlugun, Evren Fong, Kah Ee Tan, Swee Tiam Dang, Cuong Sun, Xiao Wei Sun, Handong Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Cylindrical cavities Colloidal nanorods In recent years, colloidal semiconductor nanorods have attracted great interest for polarized spontaneous emission. However, their polarized gain has not been possible to achieve so far. In this work we show the highly polarized stimulated emission from the densely packed ensembles of core-seeded nanorods in a cylindrical cavity. Here CdSe/CdS dot-in-rods were coated and aligned on the inner wall of a capillary tube, providing optical feedback for the nanorod gain medium. Results show that the polarized gain originates intrinsically from the aligned nanorods and not from the cavity and that the optical anisotropy of the nanorod ensemble was amplified with the capillary tube, resulting in highly polarized whispering gallery mode lasing. The highly polarized emission and lasing, together with easy fabrication and flexible incorporation, make this microlaser a promising candidate for important color conversion and enrichment applications including liquid crystal display backlighting and laser lighting. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2016-01-13T08:31:05Z 2019-12-06T14:41:49Z 2016-01-13T08:31:05Z 2019-12-06T14:41:49Z 2015 Journal Article Gao, Y., Ta, V. D., Zhao, X., Wang, Y., Chen, R., Mutlugun, E., et al. (2015). Observation of polarized gain from aligned colloidal nanorods. Nanoscale, 7(15), 6481-6486. 2040-3364 https://hdl.handle.net/10356/81862 http://hdl.handle.net/10220/39699 10.1039/C4NR07395A en Nanoscale © 2015 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanoscale, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/C4NR07395A]. 6 p. application/pdf application/pdf |
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Cylindrical cavities Colloidal nanorods |
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Cylindrical cavities Colloidal nanorods Gao, Yuan Ta, Van Duong Zhao, Xin Wang, Yue Chen, Rui Mutlugun, Evren Fong, Kah Ee Tan, Swee Tiam Dang, Cuong Sun, Xiao Wei Sun, Handong Demir, Hilmi Volkan Observation of polarized gain from aligned colloidal nanorods |
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In recent years, colloidal semiconductor nanorods have attracted great interest for polarized spontaneous emission. However, their polarized gain has not been possible to achieve so far. In this work we show the highly polarized stimulated emission from the densely packed ensembles of core-seeded nanorods in a cylindrical cavity. Here CdSe/CdS dot-in-rods were coated and aligned on the inner wall of a capillary tube, providing optical feedback for the nanorod gain medium. Results show that the polarized gain originates intrinsically from the aligned nanorods and not from the cavity and that the optical anisotropy of the nanorod ensemble was amplified with the capillary tube, resulting in highly polarized whispering gallery mode lasing. The highly polarized emission and lasing, together with easy fabrication and flexible incorporation, make this microlaser a promising candidate for important color conversion and enrichment applications including liquid crystal display backlighting and laser lighting. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Gao, Yuan Ta, Van Duong Zhao, Xin Wang, Yue Chen, Rui Mutlugun, Evren Fong, Kah Ee Tan, Swee Tiam Dang, Cuong Sun, Xiao Wei Sun, Handong Demir, Hilmi Volkan |
format |
Article |
author |
Gao, Yuan Ta, Van Duong Zhao, Xin Wang, Yue Chen, Rui Mutlugun, Evren Fong, Kah Ee Tan, Swee Tiam Dang, Cuong Sun, Xiao Wei Sun, Handong Demir, Hilmi Volkan |
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Gao, Yuan |
title |
Observation of polarized gain from aligned colloidal nanorods |
title_short |
Observation of polarized gain from aligned colloidal nanorods |
title_full |
Observation of polarized gain from aligned colloidal nanorods |
title_fullStr |
Observation of polarized gain from aligned colloidal nanorods |
title_full_unstemmed |
Observation of polarized gain from aligned colloidal nanorods |
title_sort |
observation of polarized gain from aligned colloidal nanorods |
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2016 |
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https://hdl.handle.net/10356/81862 http://hdl.handle.net/10220/39699 |
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