Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity
In this work, monolithically‐fabricated vertical cavity surface emitting lasers (VCSELs) of densely‐packed, orientation‐controlled, atomically flat colloidal quantum wells (CQWs) using a self‐assembly method is reported and single‐mode lasing from a record thin colloidal gain medium with a film thic...
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sg-ntu-dr.10356-1483872021-05-04T03:28:29Z Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity Foroutan-Barenji, Sina Erdem, Onur Delikanli, Savas Yagci, Huseyin Bilge Gheshlaghi, Negar Altintas, Yemliha Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays Science::Physics Colloidal Quantum Wells Single-mode Lasing In this work, monolithically‐fabricated vertical cavity surface emitting lasers (VCSELs) of densely‐packed, orientation‐controlled, atomically flat colloidal quantum wells (CQWs) using a self‐assembly method is reported and single‐mode lasing from a record thin colloidal gain medium with a film thickness of 7 nm under femtosecond optical excitation is demonstrated. Specially engineered CQWs are used to demonstrate these hybrid CQW‐VCSELs consisting of only a few layers to a single monolayer of CQWs and are achieved the lasing from these thin gain media by thoroughly modeling and implementing a vertical cavity consisting of distributed Bragg reflectors with an additional dielectric layer for mode tuning. Accurate spectral and spatial alignment of the cavity mode with the CQW films is secured with the help of full electromagnetic computations. While overcoming the long‐pending problem of limited electrical conductivity in thicker colloidal films, such ultrathin colloidal gain media can be helpful to enable fully electrically‐driven colloidal lasers. National Research Foundation (NRF) Accepted version The authors acknowledge the financial support from the Singapore National Research Foundation under the program NRF-NRFI2016-08 and in part from TUBITAK 115E679. 2021-05-04T03:28:29Z 2021-05-04T03:28:29Z 2021 Journal Article Foroutan-Barenji, S., Erdem, O., Delikanli, S., Yagci, H. B., Gheshlaghi, N., Altintas, Y. & Demir, H. V. (2021). Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity. Laser and Photonics Reviews, 15(4), 2000479-. https://dx.doi.org/10.1002/lpor.202000479 1863-8899 0000-0003-0623-8987 0000-0003-1793-112X https://hdl.handle.net/10356/148387 10.1002/lpor.202000479 2-s2.0-85101918350 4 15 2000479 en Laser and Photonics Reviews This is the peer reviewed version of the following article: Foroutan-Barenji, S., Erdem, O., Delikanli, S., Yagci, H. B., Gheshlaghi, N., Altintas, Y. & Demir, H. V. (2021). Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity. Laser and Photonics Reviews, 15(4), 2000479-. https://dx.doi.org/10.1002/lpor.202000479, which has been published in final form at https://doi.org/10.1002/lpor.202000479. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
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Science::Physics Colloidal Quantum Wells Single-mode Lasing Foroutan-Barenji, Sina Erdem, Onur Delikanli, Savas Yagci, Huseyin Bilge Gheshlaghi, Negar Altintas, Yemliha Demir, Hilmi Volkan Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
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In this work, monolithically‐fabricated vertical cavity surface emitting lasers (VCSELs) of densely‐packed, orientation‐controlled, atomically flat colloidal quantum wells (CQWs) using a self‐assembly method is reported and single‐mode lasing from a record thin colloidal gain medium with a film thickness of 7 nm under femtosecond optical excitation is demonstrated. Specially engineered CQWs are used to demonstrate these hybrid CQW‐VCSELs consisting of only a few layers to a single monolayer of CQWs and are achieved the lasing from these thin gain media by thoroughly modeling and implementing a vertical cavity consisting of distributed Bragg reflectors with an additional dielectric layer for mode tuning. Accurate spectral and spatial alignment of the cavity mode with the CQW films is secured with the help of full electromagnetic computations. While overcoming the long‐pending problem of limited electrical conductivity in thicker colloidal films, such ultrathin colloidal gain media can be helpful to enable fully electrically‐driven colloidal lasers. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Foroutan-Barenji, Sina Erdem, Onur Delikanli, Savas Yagci, Huseyin Bilge Gheshlaghi, Negar Altintas, Yemliha Demir, Hilmi Volkan |
format |
Article |
author |
Foroutan-Barenji, Sina Erdem, Onur Delikanli, Savas Yagci, Huseyin Bilge Gheshlaghi, Negar Altintas, Yemliha Demir, Hilmi Volkan |
author_sort |
Foroutan-Barenji, Sina |
title |
Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
title_short |
Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
title_full |
Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
title_fullStr |
Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
title_full_unstemmed |
Single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
title_sort |
single-mode lasing from a single 7 nm thick monolayer of colloidal quantum wells in a monolithic microcavity |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/148387 |
_version_ |
1699245889351057408 |