American Journal of Optics and Photonics

Volume 6, Issue 3, September 2018

  • Variation of the Photoionization Cross-Section with the Position of a Hydrogenic Donor Impurity in a Gallium Arsenide Quantum Well Dot of Square Cross-Section

    Winnie Otieno, Hannington Oyoko

    Issue: Volume 6, Issue 3, September 2018
    Pages: 25-30
    Received: Sep. 02, 2018
    Accepted: Oct. 06, 2018
    Published: Oct. 29, 2018
    Abstract: In the present work, a theoretical study of the variation of the photoionization cross-section with the incident photon frequency and the axial position of a hydrogenic donor impurity in GaAs quantum well dot of square cross-section is carried out. In the calculation, a trial wave function in the effective mass approximation and a finite potential ... Show More
  • Higher-Order Nonlinear Schrödinger Equation Family in Optical Fiber and Solitary Wave Solutions

    Rodrique Njikue, Jean Roger Bogning, Timoleon Crépin Kofané

    Issue: Volume 6, Issue 3, September 2018
    Pages: 31-41
    Received: Aug. 19, 2018
    Accepted: Sep. 06, 2018
    Published: Dec. 14, 2018
    Abstract: In this paper, we modify with an appropriate analytical technique, the characteristics of the optical fiber through the modification of the coefficients of the highly nonlinear partial differential equation, which initially governs the dynamics of the propagation in such a wave guide. The procedure consists to assign arbitrary coefficients to the v... Show More