Jump to main content
Jump to site search

Issue 15, 2015
Previous Article Next Article

Observation of polarized gain from aligned colloidal nanorods

Author affiliations

Abstract

In recent years, colloidal semiconductor nanorods have attracted great interest for polarized spontaneous emission. However, their polarized gain has not been possible to achieve so far. In this work we show the highly polarized stimulated emission from the densely packed ensembles of core-seeded nanorods in a cylindrical cavity. Here CdSe/CdS dot-in-rods were coated and aligned on the inner wall of a capillary tube, providing optical feedback for the nanorod gain medium. Results show that the polarized gain originates intrinsically from the aligned nanorods and not from the cavity and that the optical anisotropy of the nanorod ensemble was amplified with the capillary tube, resulting in highly polarized whispering gallery mode lasing. The highly polarized emission and lasing, together with easy fabrication and flexible incorporation, make this microlaser a promising candidate for important color conversion and enrichment applications including liquid crystal display backlighting and laser lighting.

Graphical abstract: Observation of polarized gain from aligned colloidal nanorods

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Dec 2014, accepted on 12 Mar 2015 and first published on 16 Mar 2015


Article type: Communication
DOI: 10.1039/C4NR07395A
Author version
available:
Download author version (PDF)
Citation: Nanoscale, 2015,7, 6481-6486
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Observation of polarized gain from aligned colloidal nanorods

    Y. Gao, V. D. Ta, X. Zhao, Y. Wang, R. Chen, E. Mutlugun, K. E. Fong, S. T. Tan, C. Dang, X. W. Sun, H. Sun and H. V. Demir, Nanoscale, 2015, 7, 6481
    DOI: 10.1039/C4NR07395A

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements