Nonlinear optical absorption via two-photon process in asymmetrical Gaussian potential quantum wells. (January 2015)

• Record Type: Journal Article
• Authors: Phuc, Huynh Vinh; Tung, Luong Van; Vinh, Pham Tuan; Dinh, Le
• Is Part Of: Superlattices and microstructures. Volume 77(2015)
• Page Start: 267
• Page End: 275
• Publication Date: 2015-01
• Subjects: Nonlinear optics -- Phonon-assisted cyclotron resonance -- Half-width -- Gaussian potential -- Electric field; Superlattices as materials -- Periodicals; Microstructure -- Periodicals; Semiconductors -- Periodicals; Superréseaux -- Périodiques; Microstructure (Physique) -- Périodiques; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.spmi.2014.11.024
• Languages: English
• ISSNs: 0749-6036

Abstract

Highlights: Linear and nonlinear optical absorption spectra in AGPQWs have been investigated. The results are calculated for GaAs and Ga1− x Al x As materials. The two-photon absorption process has been included. There is a clear monotonic behavior of the resonant peaks and the half-width in both one and two-photon absorption processes. Abstract: In this paper, linear and nonlinear optical absorption spectrum in asymmetrical Gaussian potential quantum wells under the applied magnetic and electric fields are studied via investigating the phonon-assisted cyclotron resonance (PACR) effect. The results are calculated for GaAs and Ga1− x Al x As materials. Our results show that the optical absorption behaviors and the half-width are significantly dependent on the height of the Gaussian potential, the well width, the magnetic field, and the temperature. It is also found that there is a clear monotonic behavior of the resonant peaks and the half-width as functions of the factors mentioned above in both one and two-photon absorption processes.