Random lasing from gold-doped zinc oxide nanorods

Abdullah Taha Ali; W. Maryam; Yu Wei Huang; H. C. Hsu; Naser M. Ahmed; H. Abu Hassan; N. Zainal

doi:10.1016/j.optmat.2022.112776

Random lasing from gold-doped zinc oxide nanorods

Abdullah Taha Ali, W. Maryam, Yu Wei Huang, H. C. Hsu, Naser M. Ahmed, H. Abu Hassan, N. Zainal

Department of Photonics

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

In this article, we report our investigation of random laser emission from Au-doped ZnO nanorods fabricated by chemical bath deposition (CBD) at different Au concentrations. The crystal structure, morphological variations, and optical properties of the nanorods were investigated. The crystallite size of the doped nanorods increased with Au concentration, indicating lattice expansion of ZnO after Au doping. Photoluminescence (PL) measurements revealed a broad emission centered at 570 nm which is attributable to the transitions associated with excess oxygen vacancies due to doping. The lowest threshold for lasing was observed at 32 mJ/cm² of pump power with the spectral width of the lasing peak ∼0.18 nm from the sample with the highest Au atomic doping percentage (∼1.2 at.%). This study reveals a possible solution to lowering random lasing threshold by doping the gain material.

Original language	English
Article number	112776
Journal	Optical Materials
Volume	132
DOIs	https://doi.org/10.1016/j.optmat.2022.112776
Publication status	Published - 2022 Oct

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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10.1016/j.optmat.2022.112776

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@article{83e52347424247ec9ea9e1767dd55558,

title = "Random lasing from gold-doped zinc oxide nanorods",

abstract = "In this article, we report our investigation of random laser emission from Au-doped ZnO nanorods fabricated by chemical bath deposition (CBD) at different Au concentrations. The crystal structure, morphological variations, and optical properties of the nanorods were investigated. The crystallite size of the doped nanorods increased with Au concentration, indicating lattice expansion of ZnO after Au doping. Photoluminescence (PL) measurements revealed a broad emission centered at 570 nm which is attributable to the transitions associated with excess oxygen vacancies due to doping. The lowest threshold for lasing was observed at 32 mJ/cm2 of pump power with the spectral width of the lasing peak ∼0.18 nm from the sample with the highest Au atomic doping percentage (∼1.2 at.%). This study reveals a possible solution to lowering random lasing threshold by doping the gain material.",

author = "Ali, {Abdullah Taha} and W. Maryam and Huang, {Yu Wei} and Hsu, {H. C.} and Ahmed, {Naser M.} and Hassan, {H. Abu} and N. Zainal",

note = "Funding Information: This work was supported by Universiti Sains Malaysia through Geran Khas Matching RUI under account number: 1001/PFIZIK/8011138 and 2021 SATU Joint Research Scheme (JRS) USM 04 and NCKU 44 . Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = oct,

doi = "10.1016/j.optmat.2022.112776",

language = "English",

volume = "132",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier",

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TY - JOUR

T1 - Random lasing from gold-doped zinc oxide nanorods

AU - Ali, Abdullah Taha

AU - Maryam, W.

AU - Huang, Yu Wei

AU - Hsu, H. C.

AU - Ahmed, Naser M.

AU - Hassan, H. Abu

AU - Zainal, N.

N1 - Funding Information: This work was supported by Universiti Sains Malaysia through Geran Khas Matching RUI under account number: 1001/PFIZIK/8011138 and 2021 SATU Joint Research Scheme (JRS) USM 04 and NCKU 44 . Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/10

Y1 - 2022/10

N2 - In this article, we report our investigation of random laser emission from Au-doped ZnO nanorods fabricated by chemical bath deposition (CBD) at different Au concentrations. The crystal structure, morphological variations, and optical properties of the nanorods were investigated. The crystallite size of the doped nanorods increased with Au concentration, indicating lattice expansion of ZnO after Au doping. Photoluminescence (PL) measurements revealed a broad emission centered at 570 nm which is attributable to the transitions associated with excess oxygen vacancies due to doping. The lowest threshold for lasing was observed at 32 mJ/cm2 of pump power with the spectral width of the lasing peak ∼0.18 nm from the sample with the highest Au atomic doping percentage (∼1.2 at.%). This study reveals a possible solution to lowering random lasing threshold by doping the gain material.

AB - In this article, we report our investigation of random laser emission from Au-doped ZnO nanorods fabricated by chemical bath deposition (CBD) at different Au concentrations. The crystal structure, morphological variations, and optical properties of the nanorods were investigated. The crystallite size of the doped nanorods increased with Au concentration, indicating lattice expansion of ZnO after Au doping. Photoluminescence (PL) measurements revealed a broad emission centered at 570 nm which is attributable to the transitions associated with excess oxygen vacancies due to doping. The lowest threshold for lasing was observed at 32 mJ/cm2 of pump power with the spectral width of the lasing peak ∼0.18 nm from the sample with the highest Au atomic doping percentage (∼1.2 at.%). This study reveals a possible solution to lowering random lasing threshold by doping the gain material.

UR - http://www.scopus.com/inward/record.url?scp=85135151068&partnerID=8YFLogxK

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U2 - 10.1016/j.optmat.2022.112776

DO - 10.1016/j.optmat.2022.112776

M3 - Article

AN - SCOPUS:85135151068

SN - 0925-3467

VL - 132

JO - Optical Materials

JF - Optical Materials

M1 - 112776

ER -

Random lasing from gold-doped zinc oxide nanorods

Abstract

All Science Journal Classification (ASJC) codes

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