Second-Harmonic Whispering-Gallery Modes in ZnO Nanotetrapod

We present the observation of second-harmonic (SH) whispering-gallery modes (WGMs) in the hexagonal cross-sections of the tapered ZnO nanotetrapod legs. Because of the continuously changing diameter in the leg, several orders of the WGMs at different SH wavelengths can be on resonance simultaneously...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Nano letters 2009-05, Vol.9 (5), p.2109-2112
Hauptverfasser:	Zhang, Yong, Zhou, Huajun, Liu, S. W, Tian, Z. Ryan, Xiao, Min
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Physics Structure of solids and liquids crystallography
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We present the observation of second-harmonic (SH) whispering-gallery modes (WGMs) in the hexagonal cross-sections of the tapered ZnO nanotetrapod legs. Because of the continuously changing diameter in the leg, several orders of the WGMs at different SH wavelengths can be on resonance simultaneously at different locations along the leg. The strongest SH WGMs occur when the polarization of the fundamental excitation beam is parallel to the c-axis of the crystal along the leg.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl900622q