Absorption Coefficient of Weak Electromagnetic Waves Caused by Confined Electrons in Quantum Wires

The Nonlinear Absorption of a Strong Electromagnetic Waves Caused by Confined Electrons in a Cylindrical Quantum Wire

“…We insert the expression for n n, , p (t) into the expression for j(t) and then insert the expression for j(t) into the expression for α in Eq. (8). Using the properties of Bessel function and realizing the calculations, we obtain the nonlinear absorption coefficient of a strong EMW by confined electrons in a CQW as…”

“…The linear absorption has been studied in normal bulk semiconductors 1, 2], in two dimensional systems [3][4][5][6] and in quantum wires [7,8]. The nonlinear absorption of a strong electromagnetic wave (EMW) was considered in normal bulk semiconductors [9], quantum wells [10,16], doping superlattices [17,18].…”

“…In recent years, the optical properties in bulk semiconductors, as well as low-dimensional systems, have been investigated [1][2][3][4][5][6][7][8][9][10][11]. The linear absorption has been studied in normal bulk semiconductors 1, 2], in two dimensional systems [3][4][5][6] and in quantum wires [7,8].…”

Negative Absorption Coefficient of a Weak Electromagnetic Wave Caused by Electrons Confined in Rectangular Quantum Wires in the Presence of Laser Radiation Modulated by Amplitude

“…C q is the electron -optical phonon interaction constant [3,4], C q 2 = e 2 ω 0 2ε 0 V q 2 1 χ∞ − 1 χ 0 , where V and ε 0 are the normalization volume and the electronic constant, χ 0 and χ ∞ are the static and the high-frequency dielectric constants, respectively. A(t) is the vector potential of field of the three EMWs.…”

“…In quantum wires, many the physical properties of the material changes significantly from the properties of normal bulk semiconductors, including optical properties [1,2]. The linear absorption of a weak EMW and the nonlinear absorption of a strong EMW in low-dimensional systems have been studied [3][4][5][6]. The influence of laser radiation on the absorption of a weak EMW in normal bulk semiconductors, quantum wells and cylindrical quantum wires have been investigated using the quantum kinetic equation method [7][8][9][10].…”