Second-harmonic generation coefficients in asymmetrical semi-exponential quantum wells

作者：Mou Sen; Guo Kangxian^*; Liu Guanghui; Xiao Bo

来源：Physica B: Condensed Matter , 2014, 434: 84-88.

DOI：10.1016/j.physb.2013.10.029

• Quantum well
• Second-harmonic generation

Second-harmonic generation (SHG) coefficients in asymmetrical semi-exponential quantum wells (ASEQW) are studied theoretically. The eigenfunctions and the energy eigenvalues are obtained by solving Schrodinger equation within the framework of effective mass approximation. In addition, the analytic expression of SHG coefficients is acquired by using compact-density-matrix approach and iterative method. The results show that both sigma and U-0, which are parameters of the bound potential in the growth direction of ASEQW, have great influences on the magnitude and the resonant frequencies of SHG coefficients.

• 单位
  广州大学