Room-Temperature Lasing from Mie-Resonant Nonplasmonic Nanoparticles
Ekaterina Tiguntseva, Kirill Koshelev, Aleksandra D. Furasova, Pavel Tonkaev, Vladimir Mikhailovskii, Elena V. Ushakova, Denis G. Baranov, Timur Shegai, Anvar Zakhidov, Yuri S. Kivshar, Sergey Makarov
Abstract
Subwavelength particles supporting Mie resonances underpin a strategy in nanophotonics for efficient control and manipulation of light by employing both an electric and a magnetic optically induced multipolar resonant response. Here, we demonstrate that monolithic dielectric nanoparticles made of CsPbBr3 halide perovskites can exhibit both efficient Mie-resonant lasing and structural coloring in the visible and near-IR frequency ranges. We employ a simple chemical synthesis with nearly epitaxial quality for fabricating subwavelength cubes with high optical gain and demonstrate single-mode lasing governed by the Mie resonances from nanocubes as small as 310 nm by the side length. These active nanoantennas represent the most compact room-temperature nonplasmonic nanolasers demonstrated until now.