UV lasing in powdered ZnO excited by nanosecond pumping

Author

Markushev, Valery M. ; Ryzhkov, Mikhail V. ; Briskina, Charus M. ; Cao, Hui ; Zadorozhnaya, Lyudmila A. ; Li, Lyudmila E. ; Gevargizov, Eugeniy I. ; Demianets, Lyudmila N.

Author_Institution

Inst. of Radio Eng. & Electron., RAS, Moscow, Russia

Volume

1

fYear

2005

fDate

12-17 Sept. 2005

Firstpage

102

Abstract

Investigations of UV spectra of powders and disordered films of ZnO excited by nanosecond pumping were conducted. Spectra of spontaneous emission were registered at 300 and 77 K. With some of our powdered samples we achieved lasing at 300 K. The threshold values of pumping energy density occurred to be higher than that under picosecond pumping approximately up to two orders of magnitude. Peculiarities of different samples lasing are demonstrated and discussed.

Keywords

high-speed optical techniques; optical films; optical pumping; powders; semiconductor lasers; spontaneous emission; ultraviolet spectra; wide band gap semiconductors; zinc compounds; 300 K; 77 K; UV emission; UV lasing; UV spectra; ZnO; disordered films; nanosecond pumping; picosecond pumping; powdered ZnO; powdered samples; powdered zinc oxide; pumping energy density threshold; random lasers; spontaneous emission spectra; Bandwidth; Conductive films; Excitons; Laser excitation; Physics; Powders; Pump lasers; Semiconductor lasers; Spontaneous emission; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Optoelectronics and Lasers, 2005. Proceedings of CAOL 2005. Second International Conference on

Print_ISBN

0-7803-9130-6

Type

conf

DOI

10.1109/CAOL.2005.1553829

Filename

1553829