Program

O.2 -- Oral, IWTCP-3

Date: Monday, 27 July 2015

Time: 16h35 - 16h55

Nonlinear optically detected magnetophonon resonance via two-photon process in parabolic quantum wells

Tran Cong Phong (1), Vo Thanh Lam (2), Nguyen Dinh Hien (3)

(1) Vietnam Institute of Educational Sciences, 101 Tran Hung Dao Str., District Hoan Kiem, Ha Noi, Viet Nam; (2) Department of Physics, Sai Gon University, 273 An Duong Vuong Str., District 5, Ho Chi Minh City, Viet Nam; (3) Hue University’s College of Education, 34 Le Loi Str., Hue City, Viet Nam

In this work, the combined effect of aluminum concentration, hydrostatic pressure, temperature, and confinement frequency of a parabolic quantum well (PQW) on the nonlinear optically detected magnetophonon resonance (NODMPR) via two-photon absorption process is investigated theoretically. The analytical expression of the nonlinear optical absorption power (NOAP) is obtained by using the operator projection technique in case of electron-optical phonon scattering for the absorption of both one and two photons. The numerical results are calculated for typical GaAs/GaAlAs quantum well. The obtained results show that the hydrostatic pressure, aluminum concentration, temperature, and confinement frequency have a significant effect on the NOAP as well as on the half-width. Moreover, it has been found that the optical properties of the GaAs/GaAlAs PQW can be modified by changing these parameters. This gives a new capacity for optical device applications

Presenter: Tran Cong Phong