ABSTRACT Simultaneous effects of hydrostatic pressure and the geometrical confinement on the excitonic and some nonlinear optical properties of an exciton confined in an InP/ZnS core/shell quantum dot are investigated. Pressure associated exciton binding energy, oscillator strength, absorption coefficient, changes of refractive index and optical Raman gain are brought out for various values of ratio of radii of core/shell quantum dot. The results show that the binding energy of the exciton enhances with the application of hydrostatic pressure for all the ratio of radii. The enhancement of resonance amplitude and shifting towards the higher energies in absorption spectra is noted with the applied pressure and the peak values of refraction properties are found to reduce monotonically. The bare broad Raman band is observed at 335 cm−1 and this band shifts towards the higher values when the hydrostatic pressure is applied. They are in good agreement with the existing available literature.

中文翻译：

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III-V/II-VI族核/壳量子点中的压力相关非线性光学特性

摘要研究了静水压力和几何限制对限制在 InP/ZnS 核/壳量子点中的激子的激子和一些非线性光学性质的同时影响。压力相关激子结合能、振子强度、吸收系数、折射率和光学拉曼增益的变化对于核/壳量子点半径比的各种值都给出。结果表明，对于所有半径比，激子的结合能随着流体静压力的应用而增强。共振振幅的增强和吸收光谱中向更高能量的转移随着施加的压力被注意到，并且发现折射特性的峰值单调降低。在 335 cm-1 处观察到裸露的宽拉曼带，当施加静水压力时，该带向更高的值移动。它们与现有的文献非常吻合。