Title :
Directional lasing and energy transfer in ZnO nanotree
Author :
Zhaol, F.L. ; Ding, C.R. ; Huang, M. ; Zhao, F.L. ; Yang, X.F. ; Zheng, J.G. ; Zhang, T.R. ; Wu, M.M. ; Tian, Z.R. ; Wang, H.Z.
Author_Institution :
State Key Lab. of Optoelectron. Mater. & Technol., Sun Yat-sen Univ., Guangzhou
Abstract :
The obliquely branched nanotree structures have been synthesized with the one-pot synthesis directly on the Zn substrate. The directional lasing spectroscopy of the nanometer branched ZnO crystallite arrays has been measured under high intensity femtosecond laser pulse excitation with femtosecond synchroscan streak camera as the detection system. The directional dependant ultrafast fluorescence emission gives clear evidence that there exists intelligent energy flow of ZnO nano-tree structures. Such processes open a way to fabricate the integrated optoelectronic apparatus.
Keywords :
II-VI semiconductors; crystallites; fluorescence; high-speed optical techniques; nanostructured materials; semiconductor lasers; wide band gap semiconductors; zinc compounds; ZnO; directional lasing spectroscopy; energy transfer; femtosecond laser pulse excitation; femtosecond synchroscan streak camera; nanometer branched crystallite arrays; obliquely branched nanotree structures; one-pot synthesis; ultrafast fluorescence emission; Cameras; Crystallization; Energy exchange; Laser excitation; Nanostructures; Optical arrays; Optical pulses; Pulse measurements; Spectroscopy; Zinc oxide;
Conference_Titel :
Nanoelectronics Conference, 2008. INEC 2008. 2nd IEEE International
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1572-4
Electronic_ISBN :
978-1-4244-1573-1
DOI :
10.1109/INEC.2008.4585568
