HKUST Institutional Repository >
PHYS Journal/Magazine Articles >
Please use this identifier to cite or link to this item:
|Title: ||Dynamics of random laser and coherent backscattering of light from ZnO amplifying random medium|
|Authors: ||Sun, T.|
Qiu, Z. R.
Su, Hui Min
Zhang, X. D.
Zhang, Zhao Qing
Wong, George K. L.
|Keywords: ||I-VI semiconductors|
Laser beam applications
|Issue Date: ||Dec-2007 |
|Citation: ||Applied physics letters, v. 91, 241110 (2007)|
|Abstract: ||We investigated the dynamics of coherent backscattering cone and random laser in a disordered gain medium of ZnO powder. Theoretical fit to the coherent backscattering cone yields a transport mean free path l approximately equal to the probe wavelength λ, indicating that the scattering process is in the strong scattering regime. Supernarrow emissions from the laser are accompanied by enhancement and sharpening of the coherent backscattering cone. This enhanced and sharpened backscattering cone returns to a normal profile within 10–20 ps, indicating an ultrafast gain lifetime in the medium, which is in good agreement with the time-resolved measurement of the random laser emissions.|
|Rights: ||Applied Physics Letters © copyright (2007) American Institute of Physics. The Journal's web site is located at http://apl.aip.org/apl|
|Appears in Collections:||PHYS Journal/Magazine Articles|
Files in This Item:
Find published version via
All items in this Repository are protected by copyright, with all rights reserved.