Observation of ultraviolet whispering gallery modes in ZnMgO microrods

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F, Bellarmine and E Senthil, Kumar and Ramanjaneyulu, Mannam and MS Ramachandra, Rao (2019) Observation of ultraviolet whispering gallery modes in ZnMgO microrods. Journal of Luminescence, 210. pp. 404-407. ISSN 1872-7883

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School: School of Applied Science and Humanities > Department of Physics

Department: School of Applied Science and Humanities > Department of Physics

Official URL: https://doi.org/10.1016/j.jlumin.2019.01.068

Abstract

We report on the fabrication of ZnO and Zn0.9Mg0.1O microrods using nanoparticle assisted pulsed laser deposition (NAPLD). Micro-photoluminescence studies reveal that Zn0.9Mg0.1O microrods exhibited a blue shift in the ultraviolet (UV) emission relative to unintentionally doped ZnO that was attributed to the increase in bandgap due to Mg doping. High-resolution micro-photoluminescence clearly indicated the presence of whispering gallery modes (WGMs) for both ZnO and Zn0.9Mg0.1O. Transverse electric (TE) and transverse magnetic (TM) optical WGMs were identified using the existing plane-wave model. The observation of lower order WGM modes in Zn0.9Mg0.1O microrods may be of great interest for future UV WGM lasing.

Item Type:	Article
Subjects:	AC Rearch Cluster
Depositing User:	Unnamed user with email techsupport@mosys.org
Date Deposited:	14 Dec 2023 06:02
Last Modified:	14 Dec 2023 12:05
URI:	https://ir.vignan.ac.in/id/eprint/557

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