A Theoretical Model of Quasicrystal Resonators: A Guided Optimization Approach

• Main Authors: Libin Cui, Anwer Hayat, Linzheng Lv, Zhiyang Xu, Tianrui Zhai
• Format: Article
• Language: English
• Published: MDPI AG 2021-06-01
• Series: Crystals
• Subjects: quasicrystal resonator; analytic model; cavity coupling
• Online Access: https://www.mdpi.com/2073-4352/11/7/749

Fibonacci-spaced defect resonators were analytically investigated by cavity coupling, which exhibited a series of well-defined optical modes in fractals. The analytic model can be used to predict the output performance of microcavity lasers based on Fibonacci-spaced defect resonators, such as the mode number, resonant frequency, and Q factor. All results obtained by the analytical solution are in good consistency with that obtained by the finite-difference time-domain method. The simulation result shows that the Q factor of the resonant modes would increase dramatically with the appearance of narrower optical modes. The proposed theoretical model can be used to inversely design high performance polymer lasers based on the Fibonacci-spaced defect resonators.