Excitonic Effects on Optical Second-Harmonic Polarizabilities of Semiconductors
E K. Chang, Zachary H. Levine, Eric L. Shirley
We present an ab initio many-body formalism for computing the frequency-dependent second-harmonic polarizability of semiconductor materials that includes both local-field and excitonic effects. We calculate the second-harmonic polarizability for AIP, AIAs, GaP, and GaAs. In each case, excitonic effects increase the value of the second-harmonic polarizability by about 20%. Weobtain results in good agreement with available experiments.
Physical Review B: Condensed Matter and Materials Physics
ab initio, non-linear optics, second-harmonic generation
, Levine, Z.
and Shirley, E.
Excitonic Effects on Optical Second-Harmonic Polarizabilities of Semiconductors, Physical Review B: Condensed Matter and Materials Physics
(Accessed May 30, 2023)