Fig. 2
From: All-optical control of lead halide perovskite microlasers
The optically switchable perovskite microlasers. a The SEM image of the perovskite microrod. Inset: tilt-view SEM image. The length of two scale bar are both 10 μm. b The emission spectra of the perovskite microrod at different pumping density (μJ cm−2). c The integrated output of mode-1 (crosses) and mode-2 (squares) as a function of pumping density. Inset: Fluorescent microscope image of the microrod. d The extinction ratio of two lasing modes. Inset: The polarization of emitted light
