Title :
Lasing characteristics from optically-pumped ZnO nanocrystals for ultraviolet laser diode
Author :
Okazaki, K. ; Nakamura, D. ; Higashihata, M. ; Okada, T.
Author_Institution :
Grad. Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
The lasing characteristics of a single ZnO nanowire and nanosheet were investigated for an application to ultraviolet laser diode. ZnO nanowires and nanosheets were synthesized on a silicon substrate by a CVD method, and then those ZnO nanosheets were examined by a photoluminescence method with a third-harmonic Nd:YAG laser (355 nm, 5 ns). The observed emission spectra from both a single ZnO nanowire and nanosheet showed the obvious lasing characteristics having mode structure and a threshold for lasing which were measured to be 80 kW/cm2, and 47 kW/cm2. Those threshold would be low enough for lasing by an electrical pumping for ultraviolet laser diode.
Keywords :
chemical vapour deposition; luminescence; nanophotonics; nanowires; neodymium; optical harmonic generation; optical pumping; semiconductor lasers; yttrium compounds; zinc compounds; CVD method; YAG:Nd; ZnO; electrical pumping; emission spectra; lasing characteristics; nanosheet; nanowire; optically-pumped ZnO nanocrystals; third-harmonic Nd:YAG laser; ultraviolet laser diode; Glass; Laser excitation; Laser modes; Nanocrystals; Silicon compounds; Substrates; Zinc oxide;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6193965
