Photonics Research, 2018, 6 (6): 06000554, Published Online: Jul. 2, 2018  

Ultrafast optical nonlinearity of blue-emitting perovskite nanocrystals Download: 560次

Author Affiliations
1 College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
2 Department of Electrical and Electronic Engineering, South University of Science and Technology of China, Shenzhen 518055, China
3 Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract
Perovskite nanocrystals (NCs) have strong nonlinear optical responses with a number of potential applications, ranging from upconverted blue-lasing to the tagging of specific cellular components in multicolor fluorescence microscopy. Here, we determine the one-photon linear absorption cross section of two kinds of blue-emitting perovskite NCs, i.e., CsPbCl3 and CsPb(Cl0.53Br0.47)3, by utilizing femtosecond transient absorption spectroscopy. The wavelength-dependent nonlinear refraction and two-photon absorption have been measured at wavelengths from 620 to 720 nm by performing Z-scan measurements. The nonlinear optical responses of CsPb(Cl0.53Br0.47)3 are much more pronounced than those of CsPbCl3 due to the larger structural destabilization of the former.

Junzi Li, Can Ren, Xin Qiu, Xiaodong Lin, Rui Chen, Cheng Yin, Tingchao He. Ultrafast optical nonlinearity of blue-emitting perovskite nanocrystals[J]. Photonics Research, 2018, 6(6): 06000554.

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