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) (a) TEM image of the gold NS. The inset of panel (a) corresponds to higher magnification TEM image. (b) The normalized absorption spectra of gold nanostars (NS). (c) Illustration of the pump and detection of emission from the edge of the gain medium film.