The influence of imperfect boundaries on the mode quality factor is investigated for equilateral-triangle-resonator (ETR) semiconductor microlasers by the finite difference time domain technique and the Padé approximation with Baker's algorithm. For 2-D ETR with a refractive index of 3.2 and side length of 5 μm, the confined modes can still have a quality factor of about 1000 as small triangles with side length of 1 μm are cut from the vertices of the ETR. For a deformed 5 μm ETR with round vertices and curve sides, the simulated mode quality factors are comparable to the measured results.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Computer Networks and Communications
- Electrical and Electronic Engineering