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<p>This work investigates the tunable optical response of cylindrical core/shell quantum dots (CCSQDs) and their inverted counterparts (ICCSQDs) under different oxide environments. Using the effective mass approximation and density matrix formalism, the effects of core radius, height, and optical intensity on the linear, third-order nonlinear, and total optical absorption coefficients, as well as refractive index changes, are analyzed for intersubband transitions (1s–1p, 1p–1d, 1d–1f). The results indicate that oxide-induced dielectric modulation significantly alters resonance intensities and spectral positions, providing a pathway to tailor nonlinear optical behavior for next-generation optoelectronic and photonic devices.</p>

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Tuning of nonlinear optical properties by size, surrounding oxides and photonic intensity in CdSe/ZnS cylindrical core/shell quantum dot-oxide pattern and its inverted configurations

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • A. Naifar,
  • K. Hasanirokh

摘要

This work investigates the tunable optical response of cylindrical core/shell quantum dots (CCSQDs) and their inverted counterparts (ICCSQDs) under different oxide environments. Using the effective mass approximation and density matrix formalism, the effects of core radius, height, and optical intensity on the linear, third-order nonlinear, and total optical absorption coefficients, as well as refractive index changes, are analyzed for intersubband transitions (1s–1p, 1p–1d, 1d–1f). The results indicate that oxide-induced dielectric modulation significantly alters resonance intensities and spectral positions, providing a pathway to tailor nonlinear optical behavior for next-generation optoelectronic and photonic devices.