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Nonlinear absorption applications of CH₃NH₃PbBr₃ perovskite crystals

Wei, Tzu-Chiao, Mokkapati, Sudha, Li, Ting-You, Lin, Chun-Ho, Lin, Gong-Ru, Jagadish, Chennupati and He, Jr-Hau 2018. Nonlinear absorption applications of CH₃NH₃PbBr₃ perovskite crystals. Advanced Functional Materials 10.1002/adfm.201707175

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Researchers have recently revealed that hybrid lead halide perovskites exhibit ferroelectricity, which is often associated with other physical characteristics, such as a large nonlinear optical response. In this work, we study the non-linear optical properties of single crystal inorganic-organic hybrid perovskite CH3NH3PbBr3. By exciting the material with a 1044 nm laser, we were able to observe strong two-photon absorption-induced photoluminescence in the green spectral region. Using the transmission open-aperture Z-scan technique, we estimated the values of the two-photon absorption coefficient to be 8.5 cm GW-1, which is much higher than that of standard two-photon absorbing materials that are industrially used in nonlinear optical applications, such as LiNbO3, LiTaO3, KTiOPO4, and KH2PO4. Such a strong two-photon absorption effect in CH3NH3PbBr3 can be used to modulate the spectral and spatial profiles of laser pulses, as well as reduce noise, and can be used to strongly control the intensity of incident light. In this study, we demonstrate the superior optical limiting, pulse reshaping, and stabilization properties of CH3NH3PbBr3, opening new applications for perovskites in nonlinear optics.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Wiley
ISSN: 1616-301X
Related URLs:
Date of First Compliant Deposit: 17 January 2018
Date of Acceptance: 1 January 2018
Last Modified: 27 Jun 2019 17:20

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