Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells
Colloidal quantum wells (CQWs) have emerged as a promising class of gain material in various optical feedback configurations. This is due to their unique excitonic features arising from their 1D quantum confinement. However, existing methods for integrating CQW onto microresonators will cause low la...
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sg-ntu-dr.10356-1652642023-11-24T02:25:33Z Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells Thung, Yi Tian Duan, Rui Durmusoglu, Emek Goksu He, Yichen Xiao, Lian Lee, Calvin Xiu Xian Lew, Wen Siang Zhang, Lin Demir, Hilmi Volkan Sun, Handong School of Physical and Mathematical Sciences School of Electrical and Electronic Engineering School of Materials Science and Engineering LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays The Photonics Institute Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Science::Physics::Optics and light Colloidal Quantum Wells Colloidal Semiconductor Microlasers Self-Assembly Whispering-Gallery-Mode Lasing Colloidal quantum wells (CQWs) have emerged as a promising class of gain material in various optical feedback configurations. This is due to their unique excitonic features arising from their 1D quantum confinement. However, existing methods for integrating CQW onto microresonators will cause low laser quality due to uneven CQW coating. To overcome this, the use of liquid-interface kinetically driven self-assembly is proposed to coat ultrathin, close-packed layers of colloidal CdSe/Cd1−xZnxS core/shell CQWs between 7 and 14 nm onto the surface of silica microsphere cavities. The fabricated CQW-whispering-gallery-mode microlasers possess a commendable high quality (Q) factor of 13 000 at room temperature. Stable single-mode lasing output is demonstrated through evanescent field coupling between a CQW-coated microsphere and a thin uncoated microfiber in a 2D-3D microcavity configuration. These promising results highlight the suitability of the liquid-interface kinetically driven self-assembly method for realizing ultrathin CQW-coated microlasers and its high compatibility for integrating colloidal nanocrystals onto complex 3D microstructures for future miniaturized colloidal optoelectronic and photonic applications. Agency for Science, Technology and Research (A*STAR) Economic Development Board (EDB) Ministry of Education (MOE) National Research Foundation (NRF) Submitted/Accepted version This work was supportedby c and AME-IRG- A20E5c0083. The SEM imaging and EDS mapping wereperformed at the Facility for Analysis, Characterization, Testing and Sim-ulation (FACTS) at Nanyang Technological University, Singapore. H.V.D.and E.G.D. gratefully acknowledge the financial support in part from theSingapore Agency for Science, Technology and Research (A*STAR) MTCprogram under Grant No. M21J9b0085, Ministry of Education, Singapore,under its Academic Research Fund Tier 1 (MOE-RG62/20). H.V.D. alsogratefully acknowledges the support from TUBA. W.S.L. and C.X.X.L. ac-knowledge the support of EDB-IPP (REQ0165097). 2023-03-22T07:47:36Z 2023-03-22T07:47:36Z 2023 Journal Article Thung, Y. T., Duan, R., Durmusoglu, E. G., He, Y., Xiao, L., Lee, C. X. X., Lew, W. S., Zhang, L., Demir, H. V. & Sun, H. (2023). Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells. Laser and Photonics Reviews, 17(7), 2200849-. https://dx.doi.org/10.1002/lpor.202200849 1863-8880 https://hdl.handle.net/10356/165264 10.1002/lpor.202200849 7 17 2200849 en NRF-CRP23-2019-0007 AME-IRG- A20E5c0083 M21J9b0085 MOE-RG62/20 REQ0165097 Laser and Photonics Reviews © 2023 Wiley-VCH GmbH. This is the accepted version of the following article: Thung, Y. T., Duan, R., Durmusoglu, E. G., He, Y., Xiao, L., Lee, C. X. X., Lew, W. S., Zhang, L., Demir, H. V. & Sun, H. (2023). Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells. Laser and Photonics Reviews, 2200849-, which has been published in final form at https://doi.org/10.1002/lpor.202200849. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf application/pdf |
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Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Science::Physics::Optics and light Colloidal Quantum Wells Colloidal Semiconductor Microlasers Self-Assembly Whispering-Gallery-Mode Lasing |
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Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Science::Physics::Optics and light Colloidal Quantum Wells Colloidal Semiconductor Microlasers Self-Assembly Whispering-Gallery-Mode Lasing Thung, Yi Tian Duan, Rui Durmusoglu, Emek Goksu He, Yichen Xiao, Lian Lee, Calvin Xiu Xian Lew, Wen Siang Zhang, Lin Demir, Hilmi Volkan Sun, Handong Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
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Colloidal quantum wells (CQWs) have emerged as a promising class of gain material in various optical feedback configurations. This is due to their unique excitonic features arising from their 1D quantum confinement. However, existing methods for integrating CQW onto microresonators will cause low laser quality due to uneven CQW coating. To overcome this, the use of liquid-interface kinetically driven self-assembly is proposed to coat ultrathin, close-packed layers of colloidal CdSe/Cd1−xZnxS core/shell CQWs between 7 and 14 nm onto the surface of silica microsphere cavities. The fabricated CQW-whispering-gallery-mode microlasers possess a commendable high quality (Q) factor of 13 000 at room temperature. Stable single-mode lasing output is demonstrated through evanescent field coupling between a CQW-coated microsphere and a thin uncoated microfiber in a 2D-3D microcavity configuration. These promising results highlight the suitability of the liquid-interface kinetically driven self-assembly method for realizing ultrathin CQW-coated microlasers and its high compatibility for integrating colloidal nanocrystals onto complex 3D microstructures for future miniaturized colloidal optoelectronic and photonic applications. |
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School of Physical and Mathematical Sciences |
author_facet |
School of Physical and Mathematical Sciences Thung, Yi Tian Duan, Rui Durmusoglu, Emek Goksu He, Yichen Xiao, Lian Lee, Calvin Xiu Xian Lew, Wen Siang Zhang, Lin Demir, Hilmi Volkan Sun, Handong |
format |
Article |
author |
Thung, Yi Tian Duan, Rui Durmusoglu, Emek Goksu He, Yichen Xiao, Lian Lee, Calvin Xiu Xian Lew, Wen Siang Zhang, Lin Demir, Hilmi Volkan Sun, Handong |
author_sort |
Thung, Yi Tian |
title |
Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
title_short |
Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
title_full |
Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
title_fullStr |
Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
title_full_unstemmed |
Ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
title_sort |
ultrahigh quality microlasers from controlled self‐assembly of ultrathin colloidal semiconductor quantum wells |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/165264 |
_version_ |
1783955581119234048 |