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) Lasing emission spectra of the gain medium film with gold NS under different pump fluences. (b) Lasing emission intensity as a function of the increasing pump fluence. The inset shows that the FWHM of lasing emission peak is 6 nm.