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

fYear

2011

fDate

Aug. 28 2011-Sept. 1 2011

Firstpage

1012

Lastpage

1014

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IQEC-CLEO.2011.6193965

Filename

6193965