One-phonon-assisted resonant electron Raman scattering of GaAs quantum dots in an AlAs matrix

Intense laser field effects on the electron Raman scattering in a strained InGaN/GaN quantum well

“…This is because the laser field changes the energy eigenvalues and the corresponding wave functions of the system. The displacement in the peaks position with the variation of the laser field can be discussed as follows: with regard to the results of previous figure, for the allowed transition (3,2), E 32 increases with the increasing laser field, i.e. the peak suffers a blue-shift.…”

“…The resonant peaks (2, 1) and (3, 2) experience a blue-shift, while the SL peaks such as SL (1,2), SL(1, 3) and SL(2, 3) suffer a red-shift. The displacement in the position of the peaks for transitions between ground state and excited states, such as (2, 1) and SL (1,3), are greater than those of transitions between excited states, such as (3, 2) and SL (2,3). The reason for this result is described in the results of Fig.…”

“…In the past decade, several researchers have studied the differential cross-section (DCS) for the electron Raman scattering (ERS) to explicate the experimental results [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. For example, ERS in asymmetrical multiple quantum wells (QWs) without [9] and with an external electric field [10], effect of built-in electric field on ERS in InGaN/ GaN coupled QWs [11], ERS in semiconductor quantum wire in an external magnetic field [12], ERS in cylindrical quantum wires [13], magnetic field effects on the ERS in coaxial cylindrical quantum well wires [14], one phonon-assisted electron Raman scattering in a wurtzite cylindrical quantum well wire [15], magnetic field effect on the ERS in a cylindrical quantum dot (QD) [16], effects of hydrogenic impurity and geometrical size on the ERS in single and multilayered spherical QDs [17], combined effects of hydrostatic pressure, temperature and external electric field on ERS in a parabolic disc-shaped QD [18] were presented by various authors.…”

Optical phonon modes in a free-standing quantum wire with ring geometry

“…This investigation reveals that for the surface phonon, only the lower modes are considered for the Fröhlich electron-SO phonon interaction and the intersubband transitions can be ne- glected [20,30]. Thus, in the study of Raman scattering, and many other cases which include the process of electron-SO phonon interaction, usually the lower surface phonon modes are considered [31,32].…”

“…Especially, when R 2 → ∞, the coupling intension for the bulk-like LO modes converge to that of the bulk LO phonon modes. As R 2 → ∞, for the LO phonon modes, the confinement can be ignored and the low-dimensional structure changes to three-dimensional bulk crystal [29,32,33].…”