使用紫外激光扫描共聚焦显微镜对单个氧化锌垂直纳米线激光腔进行成像。

Imaging single ZnO vertical nanowire laser cavities using UV-laser scanning confocal microscopy.

作者信息

Gargas Daniel J, Toimil-Molares Maria Eugenia, Yang Peidong

机构信息

Department of Chemistry, University of California, Berkeley, California 94720, USA.

出版信息

J Am Chem Soc. 2009 Feb 18;131(6):2125-7. doi: 10.1021/ja8092339.

DOI:10.1021/ja8092339

PMID:19175311

Abstract

We report the fabrication and optical characterization of individual ZnO vertical nanowire laser cavities. Dilute nanowire arrays with interwire spacing >10 microm were produced by a modified chemical vapor transport (CVT) method yielding an ideal platform for single nanowire imaging and spectroscopy. Lasing characteristics of a single vertical nanowire are presented, as well as high-resolution photoluminescence imaging by UV-laser scanning confocal microscopy. In addition, three-dimensional (3D) mapping of the photoluminescence emission performed in both planar and vertical dimensions demonstrates height-selective imaging useful for vertical nanowires and heteronanostructures emerging in the field of optoelectronics and nanophotonics.

摘要

我们报道了单个ZnO垂直纳米线激光腔的制备及其光学特性。通过改进的化学气相传输（CVT）方法制备了线间距大于10微米的稀纳米线阵列，为单纳米线成像和光谱学提供了理想平台。文中展示了单个垂直纳米线的激光特性，以及通过紫外激光扫描共聚焦显微镜进行的高分辨率光致发光成像。此外，在平面和垂直维度上进行的光致发光发射的三维（3D）映射展示了高度选择性成像，这对于光电子学和纳米光子学领域中出现的垂直纳米线和异质纳米结构非常有用。