Published September 2003
| Version v1
Journal article
Time-resolved study of the random lasing in ZnO powder
- 1. Tianjin Univ., Tianjin (China). School of Precision Instrument and Optoelectronics Engineering
- 2. Department of Physics, the Hong Kong Univ. of Science and Technology, Clear Water Bater Bay, Kowloon, Hong Kong (China)
Description
In this letter, random lasing phenomenon in ZnO powder was investigated using the pump-probe technique. Under 267 nm laser pumping, supernarrow single-mode emission and multi-mode emission were observed by precisely controlling the pumping intensity and the excitation beam size on the sample. The supernarrow emission peaks are much narrower than the normal luminescence and ASE spectra. The time-resolved pump-probe measurement shows that the lifetime of the emission state above the lasing threshold is only a few picoseconds which demonstrates that the formation of supernarrow random lasing bandwidth is due to stimulated emission
Additional details
Publishing Information
- Journal Title
- Acta Physica Sinica
- Journal Volume
- 52
- Journal Issue
- 9
- Journal Page Range
- p. 2127-2130
- ISSN
- 1000-3290
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 35020430
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- EMISSION; EMISSION SPECTRA; LASER RADIATION; LIFETIME; LUMINESCENCE; NANOSTRUCTURES; OPTICAL PUMPING; PEAKS; POWDERS; TIME RESOLUTION; ZINC OXIDES
- Descriptors DEC
- CHALCOGENIDES; ELECTROMAGNETIC RADIATION; EMISSION; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; PUMPING; RADIATIONS; RESOLUTION; SPECTRA; TIMING PROPERTIES; ZINC COMPOUNDS