Surface crystal-orientation-dependent second-order nonlinear optical properties of cubic boron arsenide (c-BAs)

Surface crystal-orientation-dependent second-order nonlinear optical properties of cubic boron arsenide (c-BAs)

Blog Article

Cubic boron arsenide (c-BAs) has a potential in the integrated optoelectronic fields because of the outstanding Dish Towel thermal conductivity and copyright mobility.However, there is relatively little research on the nonlinear optical properties of c-BAs.Herein, the electronic, linear, and nonlinear second-order optical properties have been systematically investigated by the first principles calculation method.

The energy band structure demonstrates that c-BAs is an indirect bandgap semiconductor.The isotropic complex dielectric functions and the derived linear optical parameters have been obtained, such as complex refractive index and reflectivity.The dispersion of the second-order nonlinear optical coefficient also been acquired.

The dependence of the surface anisotropic second harmonic generation (SHG) patterns on the azimuth angle, Clothes Airers polarization angle, and incidence angle for c-BAs (001), (110), and (111) facet have been calculated and discussed.The optical properties prove that c-BAs has the ability in integrated optoelectronic devices.