Hot spots enriched plasmonic nanostructure-induced random lasing of quantum dots thin film

Shan Feng^{1, 3}, Zhang Xiao-Yang^{1, 2, 3}, Wu Jing-Yuan^{1, 3}, Zhang Tong^{1, 2, 3, †}

(color online) Emission characteristics of gain medium thin films. For two films, spectra were recorded at the same pump fluence of 2.5 mJ/cm². The reference film without gold NS shows ASE (red line). The film containing gold NS exhibits high intensity lasing (black line).