Issue 56, 2016, Issue in Progress

Tailoring the lasing modes in CH3NH3PbBr3 perovskite microplates via micro-manipulation

Abstract

Laser emissions from perovskite microplates have been intensively studied recently. However, due to their relatively large sizes, most of them produced multiple lasing modes simultaneously. In order to improve the monochromaticity of perovskite microlasers without significantly affecting the output energy, here we demonstrate a simple way to tailor the number of lasing modes in a microcavity. By pushing an additional microplate to contact the lasing microplate, the number of lasing modes has been effectively reduced and single-mode laser operation has been achieved even though the size of the microplate is orders of magnitude larger than the lasing wavelengths. The corresponding extinction ratio can be as high as 11.8 dB. Our experimental results show that introducing the second microplate and the extremely narrow gain region play essential roles in achieving single-mode laser operation. We believe that our findings will be interesting for the applications of perovskite microdisk lasers.

Graphical abstract: Tailoring the lasing modes in CH3NH3PbBr3 perovskite microplates via micro-manipulation

Supplementary files

Article information

Article type
Paper
Submitted
10 Mar 2016
Accepted
17 May 2016
First published
18 May 2016

RSC Adv., 2016,6, 50553-50558

Tailoring the lasing modes in CH3NH3PbBr3 perovskite microplates via micro-manipulation

S. Liu, W. Sun, Z. Gu, K. Wang, N. Zhang, S. Xiao and Q. Song, RSC Adv., 2016, 6, 50553 DOI: 10.1039/C6RA06415A

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