@article{oai:nitech.repo.nii.ac.jp:00005308,
 author = {Yang, H. Y. and Lau, S. P. and Tanemura, Masaki and Yu, S. F. and Okita, T. and Hatano, H. and Teng, K. S. and Wilks, S. P.},
 issue = {8},
 journal = {APPLIED PHYSICS LETTERS},
 month = {Aug},
 note = {Zn1-xMgxO nanoneedles were prepared by an ion-beam technique on Zn1-xMgxO thin films with Mg contents of up to 21 at.%. The photoluminescence emission energies of the Zn1-xMgxO nanoneedles measured at room temperature increased monotonically with Mg contents and it reached 3.6 eV when x = 0.21. Random laser action was observed in the Zn1-xMgxO nanoneedles with x ? 0.1 at temperature ranging from 300 to 470 K under 355 nm optical excitation. The characteristic temperature of the Zn1-xMgxO nanoneedles was determined to be 84 K. The high-temperature lasing of the Zn1-xMgxO nanoneedles are attributed to the high crystal quality of the nanoneedles, enhancement of oscillator strength in nanostructures, and a self-compensation mechanism in random laser cavities., application/pdf},
 pages = {081107-1--081107-3},
 title = {Wavelength-tunable and high-temperature lasing in ZnMgO nanoneedles},
 volume = {89},
 year = {2006}
}