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Journal of Optics
We had recently reported unique random laser action such as quasi-single-mode and lowthreshold lasing from a submicrometre-sized spherical ZnO nanoparticle film with polymer particles as defects. The present study demonstrates a novel approach to realize single-mode random lasing by adjusting the sizes of the defect particles. From the dependence of random lasing properties on defect size, we find that the average number of lasing peaks can be modified by the defect size, while other lasingdoi:10.1088/2040-8978/18/3/035202 fatcat:on3fdrppu5de3b5qgrvmrq7jz4