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Stimulated emission from ZnO nanorod arrays
- Source :
- physica status solidi c. 3:2514-2517
- Publication Year :
- 2006
- Publisher :
- Wiley, 2006.
-
Abstract
- We discuss the time-resolved photoluminescence (PL) spectra of single ZnO nanorods taken at excitation fluences above and below the laser threshold. In the latter case, P-band emission related to polariton-polariton scattering is observed for certain rod geometries while stimulated emission occurs within the electron-hole plasma band. We calculate the intensity distribution of low-order waveguide modes as well as their energy dependence for given nanorod geometries to discuss their relevance with respect to nanorod lasing and polariton propagation. Additional finite-element analysis confirms that a gold layer formed at the nanorod-substrate interface under certain growth conditions leads to an enhancement of confinement within the resonator. (2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Details
- ISSN :
- 16101642 and 18626351
- Volume :
- 3
- Database :
- OpenAIRE
- Journal :
- physica status solidi c
- Accession number :
- edsair.doi...........f8519ff401e652eca06433c465c28265