Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum
Solid-state room-temperature lasing with tunability in a wide range of wavelengths is desirable for many applications. To achieve this, besides an efficient gain material with a tunable emission wavelength, a high quality-factor optical cavity is essential. Here, we combine a film of colloidal CdSe/...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/144170 |
| _version_ | 1826111767837671424 |
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| author | Wu, Mengfei Ha, Son Tung Shendre, Sushant Durmusoglu, Emek Goksu Koh, Weon-Kyu Abujetas, Diego R. Sánchez-Gil, José A. Paniagua-Domínguez, Ramón Demir, Hilmi Volkan Kuznetsov, Arseniy I. |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Wu, Mengfei Ha, Son Tung Shendre, Sushant Durmusoglu, Emek Goksu Koh, Weon-Kyu Abujetas, Diego R. Sánchez-Gil, José A. Paniagua-Domínguez, Ramón Demir, Hilmi Volkan Kuznetsov, Arseniy I. |
| author_sort | Wu, Mengfei |
| collection | NTU |
| description | Solid-state room-temperature lasing with tunability in a wide range of wavelengths is desirable for many applications. To achieve this, besides an efficient gain material with a tunable emission wavelength, a high quality-factor optical cavity is essential. Here, we combine a film of colloidal CdSe/CdZnS core-shell nanoplatelets with square arrays of nanocylinders made of titanium dioxide to achieve optically pumped lasing at visible wavelengths and room temperature. The all-dielectric arrays support bound states in the continuum (BICs), which result from lattice-mediated Mie resonances and boast infinite quality factors in theory. In particular, we demonstrate lasing from a BIC that originates from out-of-plane magnetic dipoles oscillating in phase. By adjusting the diameter of the cylinders, we tune the lasing wavelength across the gain bandwidth of the nanoplatelets. The spectral tunability of both the cavity resonance and nanoplatelet gain, together with efficient light confinement in BICs, promises low-threshold lasing with wide selectivity in wavelengths. |
| first_indexed | 2024-10-01T02:55:53Z |
| format | Journal Article |
| id | ntu-10356/144170 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:55:53Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1441702023-03-27T15:34:54Z Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum Wu, Mengfei Ha, Son Tung Shendre, Sushant Durmusoglu, Emek Goksu Koh, Weon-Kyu Abujetas, Diego R. Sánchez-Gil, José A. Paniagua-Domínguez, Ramón Demir, Hilmi Volkan Kuznetsov, Arseniy I. School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays Engineering::Materials::Nanostructured materials Mie Resonances Colloidal Nanoplatelets Solid-state room-temperature lasing with tunability in a wide range of wavelengths is desirable for many applications. To achieve this, besides an efficient gain material with a tunable emission wavelength, a high quality-factor optical cavity is essential. Here, we combine a film of colloidal CdSe/CdZnS core-shell nanoplatelets with square arrays of nanocylinders made of titanium dioxide to achieve optically pumped lasing at visible wavelengths and room temperature. The all-dielectric arrays support bound states in the continuum (BICs), which result from lattice-mediated Mie resonances and boast infinite quality factors in theory. In particular, we demonstrate lasing from a BIC that originates from out-of-plane magnetic dipoles oscillating in phase. By adjusting the diameter of the cylinders, we tune the lasing wavelength across the gain bandwidth of the nanoplatelets. The spectral tunability of both the cavity resonance and nanoplatelet gain, together with efficient light confinement in BICs, promises low-threshold lasing with wide selectivity in wavelengths. Agency for Science, Technology and Research (A*STAR) Submitted/Accepted version This work was supported by the A*STAR SERC Pharos programme (grant number 152 73 00025; Singapore). D.R.A. and J.A.S.-G. acknowledge support from the Spanish Ministerio de Ciencia e Innovación (NANOTOPO FIS2017-91413-EXP, MELODIA PGC2018-095777-B-C21, and FPU PhD Fellowship FPU15/03566, MCIU/AEI/FEDER, UE). H.V.D. gratefully acknowledges support from TUBA. The authors acknowledge Vytautas Valuckas (IMRE, A*STAR) for SEM characterization. 2020-10-19T06:52:24Z 2020-10-19T06:52:24Z 2020 Journal Article Wu, M., Ha, S. T., Shendre, S., Durmusoglu, E. G., Koh, W., Abujetas, D. R., Sánchez-Gil, J. A., Paniagua-Domínguez, R., Demir, H. V. & Kuznetsov, A. I. (2020). Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum. Nano Letters, 20(8), 6005-6011. https://dx.doi.org/10.1021/acs.nanolett.0c01975 1530-6992 https://hdl.handle.net/10356/144170 10.1021/acs.nanolett.0c01975 32584048 8 20 6005 6011 en SERC 152 73 00025 Nano Letters This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, 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.0c01975 application/pdf application/pdf |
| spellingShingle | Engineering::Materials::Nanostructured materials Mie Resonances Colloidal Nanoplatelets Wu, Mengfei Ha, Son Tung Shendre, Sushant Durmusoglu, Emek Goksu Koh, Weon-Kyu Abujetas, Diego R. Sánchez-Gil, José A. Paniagua-Domínguez, Ramón Demir, Hilmi Volkan Kuznetsov, Arseniy I. Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum |
| title | Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum |
| title_full | Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum |
| title_fullStr | Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum |
| title_full_unstemmed | Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum |
| title_short | Room-temperature lasing in colloidal nanoplatelets via Mie-resonant bound states in the continuum |
| title_sort | room temperature lasing in colloidal nanoplatelets via mie resonant bound states in the continuum |
| topic | Engineering::Materials::Nanostructured materials Mie Resonances Colloidal Nanoplatelets |
| url | https://hdl.handle.net/10356/144170 |
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