Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids

Whispering gallery mode (WGM) resonators are shown to hold great promise to achieve high-performance lasing using colloidal semiconductor nanocrystals (NCs) in solution phase. However, the low packing density of such colloidal gain media in the solution phase results in increased lasing thresholds a...

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Main Authors: Sak, Mustafa, Taghipour, Nima, Delikanli, Savas, Shendre, Sushant, Tanriover, Ibrahim, Foroutan, Sina, Gao, Yuan, Yu, Junhong, Yanyan, Zhou, Yoo, Seongwoo, Dang, Cuong, Demir, Hilmi Volkan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/140189
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1401892023-02-28T19:46:10Z Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids Sak, Mustafa Taghipour, Nima Delikanli, Savas Shendre, Sushant Tanriover, Ibrahim Foroutan, Sina Gao, Yuan Yu, Junhong Yanyan, Zhou Yoo, Seongwoo Dang, Cuong Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Centre of Excellence for Semiconductor Lighting and Displays Centre of Optical Fiber Technology The Photonics Institute Engineering::Electrical and electronic engineering Laser Nanoplatelets Whispering gallery mode (WGM) resonators are shown to hold great promise to achieve high-performance lasing using colloidal semiconductor nanocrystals (NCs) in solution phase. However, the low packing density of such colloidal gain media in the solution phase results in increased lasing thresholds and poor lasing stability in these WGM lasers. To address these issues, here optical gain in colloidal quantum wells (CQWs) is proposed and shown in the form of high-density close-packed solid films constructed around a coreless fiber incorporating the resulting whispering gallery modes to induce gain and waveguiding modes of the fiber to funnel and collect light. In this work, a practical method is presented to produce the first CQW-WGM laser using an optical fiber as the WGM cavity platform operating at low thresholds of ≈188 µJ cm−2 and ≈1.39 mJ cm−2 under one- and two-photon absorption pumped, respectively, accompanied with a record low waveguide loss coefficient of ≈7 cm−1 and a high net modal gain coefficient of ≈485 cm−1. The spectral characteristics of the proposed CQW-WGM resonator are supported with a numerical model of full electromagnetic solution. This unique CQW-WGM cavity architecture offers new opportunities to achieve simple high-performance optical resonators for colloidal lasers. NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2020-05-27T05:13:31Z 2020-05-27T05:13:31Z 2020 Journal Article Sak, M., Taghipour, N., Delikanli, S., Shendre, S., Tanriover, I., Foroutan, S., . . . Demir, H. V. (2020). Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids. Advanced Functional Materials, 30(1), 1907417-. doi:10.1002/adfm.201907417 1616-301X https://hdl.handle.net/10356/140189 10.1002/adfm.201907417 2-s2.0-85074747378 1 30 en Advanced Functional Materials This is the accepted version of the following article: Sak, M., Taghipour, N., Delikanli, S., Shendre, S., Tanriover, I., Foroutan, S., . . ., Demir, H. V. (2020). Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids. Advanced Functional Materials, 30(1), 1907417-., which has been published in final form at doi:10.1002/adfm.201907417. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html]. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Laser
Nanoplatelets
spellingShingle Engineering::Electrical and electronic engineering
Laser
Nanoplatelets
Sak, Mustafa
Taghipour, Nima
Delikanli, Savas
Shendre, Sushant
Tanriover, Ibrahim
Foroutan, Sina
Gao, Yuan
Yu, Junhong
Yanyan, Zhou
Yoo, Seongwoo
Dang, Cuong
Demir, Hilmi Volkan
Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
description Whispering gallery mode (WGM) resonators are shown to hold great promise to achieve high-performance lasing using colloidal semiconductor nanocrystals (NCs) in solution phase. However, the low packing density of such colloidal gain media in the solution phase results in increased lasing thresholds and poor lasing stability in these WGM lasers. To address these issues, here optical gain in colloidal quantum wells (CQWs) is proposed and shown in the form of high-density close-packed solid films constructed around a coreless fiber incorporating the resulting whispering gallery modes to induce gain and waveguiding modes of the fiber to funnel and collect light. In this work, a practical method is presented to produce the first CQW-WGM laser using an optical fiber as the WGM cavity platform operating at low thresholds of ≈188 µJ cm−2 and ≈1.39 mJ cm−2 under one- and two-photon absorption pumped, respectively, accompanied with a record low waveguide loss coefficient of ≈7 cm−1 and a high net modal gain coefficient of ≈485 cm−1. The spectral characteristics of the proposed CQW-WGM resonator are supported with a numerical model of full electromagnetic solution. This unique CQW-WGM cavity architecture offers new opportunities to achieve simple high-performance optical resonators for colloidal lasers.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Sak, Mustafa
Taghipour, Nima
Delikanli, Savas
Shendre, Sushant
Tanriover, Ibrahim
Foroutan, Sina
Gao, Yuan
Yu, Junhong
Yanyan, Zhou
Yoo, Seongwoo
Dang, Cuong
Demir, Hilmi Volkan
format Article
author Sak, Mustafa
Taghipour, Nima
Delikanli, Savas
Shendre, Sushant
Tanriover, Ibrahim
Foroutan, Sina
Gao, Yuan
Yu, Junhong
Yanyan, Zhou
Yoo, Seongwoo
Dang, Cuong
Demir, Hilmi Volkan
author_sort Sak, Mustafa
title Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
title_short Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
title_full Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
title_fullStr Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
title_full_unstemmed Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
title_sort coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids
publishDate 2020
url https://hdl.handle.net/10356/140189
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