Program

P.55 -- Poster, NCTP-41

Date: Wednesday, 3 August 2016

Time: 08h30 - 10h00

Influence of phonon confinement on the nonlinear optically detected electrophonon resonance linewidth in parabolic quantum wells

Tran Cong Phong (1), Nguyen Dinh Hien (2), Huynh Vinh Phuc (3), Vo Thanh Lam (4)

(1) Viet Nam Institute of Educational Sciences, 101 Tran Hung Dao, Hoan Kiem, Ha Noi; (2) Hue University’s College of Education, 34 Le Loi, Hue; (3) Dong Thap University, 783 Phạm Huu Lau, Cao Lanh, Dong Thap; (4) Sai Gon University, 273 An Duong Vuong, District 5, Ho Chi Minh

We investigate the influence of optical phonon confinement described by Huang-Zhu model on the nonlinear optically detected electrophonon resonance (NLODEPR) effect and NLODEPR linewidth in parabolic quantum wells by using the operator projection. The obtained numerical result for the GaAs/AlAs parabolic quantum well shows that the NLODEPR linewidths depend on the confinement frequency and temperature. Besides, in the two cases of confined and bulk phonons, the linewidth (LW) 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 linewidth.

Presenter: Tran Cong Phong