Fig. 2: Single mode lasing from quasi-2D perovskite nanowires. | Light: Science & Applications

Fig. 2: Single mode lasing from quasi-2D perovskite nanowires.

From: Pulse-doubling perovskite nanowire lasers enabled by phonon-assisted multistep energy funneling

Fig. 2

a 2D pseudo-color plot of emission spectra with different pump fluences. b Evolution of lasing spectra before and after the lasing threshold. Inset: The blueshift of emission wavelength at the higher pump fluence. c Pump fluence-dependent PL intensities and FWHM of the emission bands. d Gaussian fitting of the individual lasing peak near the lasing threshold

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