Hấp thụ phi tuyến hai photon trong MoS2 đơn lớp dưới ảnh hưởng của tương tác electron-phonon âm dọc-áp điện

Abstract: In this work, we investigate the nonlinear two-photon absorption process in

molybdenum disulfide monolayer under the effect of electron-longitudinal acoustic (LA)

phonon with piezoelectric (PE) coupling. Using the perturbation method we obtain the

expression for the magneto-optical absorption coefficient (MOAC), and then using the

profile method to obtain the full width at half maximum (FWHM). The results show that

MOAC and FWHM strongly depend on the magnetic and temperature in both cases onephoton and two-photon absorption processes. The obtained results are compared to those

in case of electron-TA-PE phonon scattering