We present a theoretical study on the effects of intense laser field (ILF) and static electric field on the linear and nonlinear optical properties of a cylindrical quantum dot with Rosen–Morse axial potential under the framework of effective mass and parabolic band approximations. This study also takes into account the effects of the structure parameters (η, V1, and R). The analytical expressions of the linear, third-order nonlinear and total optical absorption coefficients (TOACs) and the relative refractive index changes (RRICs) are obtained by using the compact-density-matrix approach. The results of numerical calculations show that the resonant peak position of the TOACs and RRICs shifts towards lower energies and the magnitude of the peak increases with the effect of the static electric field and ILF. In addition, it is observed that while the resonant energies of the TOACs and RRICs of system shift towards the higher (lower) energies with the enhancement of η, V1, they decrease with the augmentation of R. Thus, the findings of this study show that the optical properties of the structure can be adjusted by changing the magnitude of structure parameters and applied external fields.

中文翻译：

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具有 Rosen-Morse 轴向电位的圆柱形量子点的电子相关非线性光学特性

我们在有效质量和抛物线带近似的框架下，对强激光场 (ILF) 和静电场对具有罗森-莫尔斯轴势的圆柱形量子点的线性和非线性光学特性的影响进行了理论研究。本研究还考虑了结构参数（η、V1 和 R）的影响。通过使用紧凑密度矩阵方法获得了线性、三阶非线性和总光吸收系数 (TOAC) 和相对折射率变化 (RRIC) 的解析表达式。数值计算结果表明，TOACs和RRICs的共振峰位置向低能量移动，并且随着静电场和ILF的影响，峰的大小增加。此外，