Reliefs of the Determinant in the Threshold Condition Analysis of a Micro/Nano Laser on a Single Graphene Strip in a Circular Quantum Wire

The reliefs of the determinant, i.e., the absolute values of the determinant as a function of frequency and threshold material gain, are analyzed. The considered geometry includes a symmetrically placed single graphene strip in a circular quantum wire. The directory names correspond to the geometric parameters (in micrometers), while the file name represents the chemical potential of the graphene strip (in electron volts). The frequency values are given in THz. The real part of the permittivity of the wire material is 2.25, corresponding to a refractive index of 1.5.

本研究针对行列式的起伏分布特性——即作为频率与阈值材料增益函数的行列式绝对值——展开分析。本次考量的几何构型为圆形量子线内对称排布的单条石墨烯条带。数据集的目录名称对应几何参数（单位：微米），文件名则代表该石墨烯条带的化学势（单位：电子伏特）。频率取值单位为太赫兹（THz）。该量子线材料的介电常数实部为2.25，对应折射率为1.5。