Analytical and numerical modeling of optical second harmonic generation in anisotropic crystals using ♯SHAARP package
Year: 2022
Type: article
Abstract: Electric-dipole optical second harmonic generation (SHG) is a second-order nonlinear process that is widely used as a sensitive probe to detect broken inversion symmetry and local polar order. Analytical modeling of the SHG polarimetry of a nonlinear optical material is essential to extract its point group symmetry and the absolute nonlinear susceptibilities. Current literature on SHG analysis involves numerous approximations and a wide range of (in)accuracies. We have developed an open-source package called the Second Harmonic Analysis of Anisotropic Rotational Polarimetry (♯SHAARP.si) which derives analytical and numerical solutions of reflection SHG polarimetry from a single interface (.si) for bulk homogeneous crystals with arbitrary symmetry group, arbitrary crystal orientation, complex and anisotropic linear dielectric tensor with frequency dispersion, a general SHG tensor and arbitrary light polarization. ♯SHAARP.si enables accurate modeling of polarimetry measurements in reflection geometry from highly absorbing crystals or wedge-shaped transparent crystals. The package is extendable to multiple interfaces.
Source: npj Computational Materials
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,090
Awards: G1088636562, G129027128, G1292847278, G1356433355, G14554683, G2145270357, G3669113783, G3858593605, G4343739756, COMPUTATIONAL MESOSCALE SCIENCE AND OPEN SOFTWARE FOR QUANTUM MATERIALS, G574795485, G6021587051, G69709960, Superior Nonlinear Optical Single Crystals and An Open-Source Modeling Package for Classical and Quantum Light Generation, COMPUTATIONAL MESOSCALE SCIENCE AND OPEN SOFTWARE FOR QUANTUM MATERIALS, G991281326
OpenAlex ID: W4310563136