2 papers
cond-mat.mtrl-sci2021
Excitonic effects on the third-order nonlinear optical properties of solids: Theory and application
You-Zhao Lan
We present a many-body Bethe-Salpeter equation eigenstates based sum-over-states method to calculate the linear and nonlinear optical properties of solids. Excitonic and local fiel…
cond-mat.mtrl-sci2020
Excitonic effect on two-photon absorption of two-dimensional semiconductors: Theory and applications to MoS2 and WS2 monolayers
You-Zhao Lan, Xiao-Hu Bao
Based on the Bethe-Salpeter equation eigenstates, we present a first-principles many-body formalism for calculating the two-photon absorption (TPA) coefficient of semiconductors. W…