Optical waveguide and cavity effects on whispering-gallery mode resonances in a ZnO nanonail
Data(s) |
20/12/2009
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Resumo |
Spatially resolved cathodoluminescence (CL) study of a ZnO nanonail, having thin shank, tapered neck, and hexagonal head sections, is reported. Monochromatic imaging and line scan profiling indicate that the wave guiding and leaking from growth imperfections in addition to the oxygen deficiency variation determine the spatial contrast of CL emissions. Occurrence of resonance peaks at identical wavelengths regardless of CL-excitation spots is inconsistent with the whispering-gallery mode (WGM) resonances of a two-dimensional cavity in the finite difference time domain simulation. However, three dimensioanl cavity simulation produced WGM peaks that are consistent with the experimental spectra, including transverse-electric resonances that are comparable to transverse-magnetic ones. |
Identificador | |
Publicador |
American Institute of Physics |
Relação |
DOI:10.1063/1.3268806 Liu, Jinzhang, Ngo, Quang Minh, Park, Kyung Ho, Kim, Sangin, Ahn, YeongHwan, Park, Ji-Yong, Koh, Ken Ha, & Lee, Soonil (2009) Optical waveguide and cavity effects on whispering-gallery mode resonances in a ZnO nanonail. Applied Physics Letters, 95(22), p. 221105. |
Direitos |
Copyright 2009 American Institute of Physics |
Fonte |
Faculty of Built Environment and Engineering; School of Engineering Systems |
Palavras-Chave | #010301 Numerical Analysis #020504 Photonics Optoelectronics and Optical Communications #020599 Optical Physics not elsewhere classified #091203 Compound Semiconductors #ZnO #Optical cavity #Wispering Gallery Mode #FDTD simulation #Resonances |
Tipo |
Journal Article |