Annular-shaped emission from gallium nitride nanotube lasers

Li, Changyi and Liu, Sheng and Hurtado, Antonio and Wright, Jeremy B. and Xu, Huiwen and Luk, Ting Shan and Figiel, Jeffrey J. and Brener, Igal and Brueck, Steven R. J. and Wang, George T. (2015) Annular-shaped emission from gallium nitride nanotube lasers. ACS Photonics, 2 (8). pp. 1025-1029. ISSN 2330-4022 (https://doi.org/10.1021/acsphotonics.5b00039)

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Abstract

Annular-shaped lasing emission is demonstrated from gallium nitride nanotubes fabricated using a two-step top-down technique. By optically pumping, we observe a clear threshold of 1055 kW/cm2, a narrow spectral linewidth of 0.19 nm, and guided emission from the nanotubes. Lasing is also demonstrated in a liquid environment, with an approximate doubling in threshold observed. The nanotube lasers could be of interest for optical nanofluidic applications or applications benefiting from a hollow beam shape. More generally, the results indicate that cross-sectional shape control can be employed to manipulate the properties of nanolasers.

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• Item metadata

  Item type:	Article
  ID code:	54652
  Dates:	Date Event 1 August 2015 Published 13 July 2015 Published Online 13 July 2015 Accepted
  Notes:	This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in ACS Photonics, copyright © American Chemical Society after peer review. To access the final edited and published work, see 10.1021/acsphotonics.5b00039
  Subjects:	Science > Physics Technology > Electrical engineering. Electronics Nuclear engineering
  Department:	Faculty of Science > Physics > Institute of Photonics
  Depositing user:	Pure Administrator
  Date deposited:	11 Dec 2015 01:00
  Last modified:	14 Apr 2024 00:33
  Related URLs:	Journal or Publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/54652