Large Second Harmonic Generation from Polar van der Waals Bismuth Telluro-Halide Semiconductors

Prashant Padmanabhan,Kevin W. C. Kwock,Samuel Gilinsky,Nicholas Sirica,Jaewook Kim,Kai Du,Sang-Wook Cheong,Rohit P. Prasankumar

Large Second Harmonic Generation from Polar van der Waals Bismuth Telluro-Halide Semiconductors

2020

Prashant Padmanabhan
Kevin W. C. Kwock
Samuel Gilinsky
Nicholas Sirica
Jaewook Kim
Kai Du
Sang-Wook Cheong
Rohit P. Prasankumar

We demonstrate large second harmonic generation from the polar van der Waals semiconductors BiTel and BiTeBr, with responses comparable to leading semiconducting nonlinear optical (NLO) materials. This highlights their promise for nanoscale NLO applications.

Keywords:

Polar
optical polarization
van der Waals force
Semiconductor
Halide
Nonlinear optics
Bismuth
Second-harmonic generation
Optoelectronics
Materials science

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