TY - GEN
T1 - Generalized Analytical and Numerical Modeling of Optical Second Harmonic Generation in Anisotropic Crystals and Complex Heterostructures Using #SHAARP Package
AU - Zu, Rui
AU - Wang, Bo
AU - He, Jingyang
AU - Weber, Lincoln
AU - Wang, Jian Jun
AU - Chen, Long Qing
AU - Gopalan, Venkatraman
N1 - Publisher Copyright:
© 2023 SPIE. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Optical second harmonic generation (SHG) is a nonlinear optical effect widely used for nonlinear optical microscopy and laser frequency conversion. The closed-form analytical solution of the nonlinear optical responses is essential for evaluating the optical responses of new materials whose optical properties are unknown a priori. Many approximations have therefore been employed in the existing analytical approaches, such as slowly varying approximation, weak reflection of the nonlinear polarization, transparent medium, high crystallographic symmetry, Kleinman symmetry, easy crystal orientation along a high-symmetry direction, phase matching conditions and negligible interference among nonlinear waves, which may lead to large errors in the reported material properties. To avoid these approximations, we have developed an open-source package named Second Harmonic Analysis of Anisotropic Rotational Polarimetry (#SHAARP) for single interface (si) and in multilayers (ml) for homogeneous crystals. The reliability and accuracy are established by experimentally benchmarking with both the SHG polarimetry and Maker fringes predicted from the package using standard materials. SHAARP.si and SHAARP.ml are available through GitHub https://github.com/Rui-Zu/SHAARP and https://github.com/bzw133/SHAARP.ml, respectively.
AB - Optical second harmonic generation (SHG) is a nonlinear optical effect widely used for nonlinear optical microscopy and laser frequency conversion. The closed-form analytical solution of the nonlinear optical responses is essential for evaluating the optical responses of new materials whose optical properties are unknown a priori. Many approximations have therefore been employed in the existing analytical approaches, such as slowly varying approximation, weak reflection of the nonlinear polarization, transparent medium, high crystallographic symmetry, Kleinman symmetry, easy crystal orientation along a high-symmetry direction, phase matching conditions and negligible interference among nonlinear waves, which may lead to large errors in the reported material properties. To avoid these approximations, we have developed an open-source package named Second Harmonic Analysis of Anisotropic Rotational Polarimetry (#SHAARP) for single interface (si) and in multilayers (ml) for homogeneous crystals. The reliability and accuracy are established by experimentally benchmarking with both the SHG polarimetry and Maker fringes predicted from the package using standard materials. SHAARP.si and SHAARP.ml are available through GitHub https://github.com/Rui-Zu/SHAARP and https://github.com/bzw133/SHAARP.ml, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85176507058&partnerID=8YFLogxK
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U2 - 10.1117/12.2676223
DO - 10.1117/12.2676223
M3 - Conference contribution
AN - SCOPUS:85176507058
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Ultrafast Nonlinear Imaging and Spectroscopy XI
A2 - Liu, Zhiwen
A2 - Psaltis, Demetri
A2 - Shi, Kebin
PB - SPIE
T2 - Ultrafast Nonlinear Imaging and Spectroscopy XI 2023
Y2 - 21 August 2023 through 22 August 2023
ER -