Nonlinear microscopy of strain in lead iodide nanosheets

Yan, Jingshi; Ou, Qingdong; Vincenti, Maria Antonietta; de Angelis, Costantino; Bao, Qiaoliang; Neshev, Dragomir N.

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Nonlinear microscopy of strain in lead iodide nanosheets

Date

2019

Authors

Yan, Jingshi

Ou, Qingdong

Vincenti, Maria Antonietta

de Angelis, Costantino

Bao, Qiaoliang

Neshev, Dragomir N.

Abstract

We investigate the nonlinearity of PbI2 nanosheets by strain. Using the polarization and thickness dependence of the nonlinear harmonic emissions, we can precisely determine their thickness and crystalline orientation with a non-invasive optical technique.