Programme

P.34 -- Poster, NCTP-43

Date: Tuesday, 31 July 2018

Time: 08:30 - 10:00

Nonlinear optically detected electrophonon resonance full width at half maximum in a parabolic GaAs quantum well with different phonon models

Nguyen Dinh Hien (1), Le Dinh (2), Tran Cong Phong (3)

(1) Nha Trang national ethnic minority Pre-university, 46 Nguyen Thien Thuat Street, Nha Trang City, Viet Nam. (2) Center for Theoretical & Computational Physics, Hue University’s College of Education, 34 Le Loi Street, Hue City, Viet Nam. (3) Vietnam Institute of Educational Sciences,101 Tran Hung Dao Street, Ha Noi City, Viet Nam.

The influence of different phonon models on the nonlinear optically detected electrophonon resonance (NLODEPR) effect and NLODEPR full-width at half-maximum (FWHM) via both one and two photon absorption processes in a parabolic GaAs quantum well by using the operator projection is theoretically studied. The obtained numerical result for the parabolic GaAs/AlAs quantum well shows that the NLODEPR full-width at half-maximum depend on the confinement frequency and temperature. Besides, in the two cases of confined and bulk phonons, the FWHM increases with the increase of temperature and confinement frequency. Furthermore, in the large range of the confinement frequency, the influence of phonon confinement plays an important role and cannot be neglected in considering the NLODEPR full-width at half-maximum.

Presenter: Nguyen Dinh Hien