Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3665913
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [22760050, 23360133]
- Iketani Science and Technology Foundation
- Grants-in-Aid for Scientific Research [23360133, 22760050] Funding Source: KAKEN
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We demonstrate that the random lasing wavelength of ZnO/Al2O3 nanopowders can be controlled by varying the weight fraction of Al2O3. This controllability is due to the fact that the extent of self-absorption by ZnO nanopowder can be modified by changing the photon-transport mean free path. The lasing threshold excitation power is also dependent on the weight fraction of Al2O3. The random lasing characteristic can be explained well by a theoretical model based on the photon-transport mean free path. (C) 2011 American Institute of Physics. [doi:10.1063/1.3665913]
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