Theoretical Analysis of Interband Single-Photon Light Absorption in Semiconductors - Effects of Valence-Conduction Band Mixing and Temperature-Dependent Bandgap
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2025-06-09 |
| Journal | East European Journal of Physics |
| Authors | Rustam Yavkachovich Rasulov, Voxob Rustamovich Rasulov, Nurillo Ubaydullo ogli Kodirov, Mardonbek Kh. Nasirov, I. Ăshboltaev |
| Analysis | Full AI Review Included |
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Executive Summary
Section titled âExecutive Summaryâ- The paper presents a theoretical analysis of single-photon absorption in semiconductors, considering valence-conduction band mixing and temperature-dependent bandgap.
- The study focuses on semiconductors with diamond and zinc blende lattice structures.
- It examines optical transitions involving light and heavy holes and the conduction band, incorporating temperature effects and coherent saturation.
- The findings suggest that heavy holes contribute significantly more (approximately 10 times) than light holes to single-photon absorption.
- The relationship between linear-circular dichroism and light intensity is explored, highlighting the role of coherent saturation.
- The Varshni and Passler models are used to describe the temperature dependence of the bandgap.
- Computational tools like âMapleâ are used for calculations.
Technical Specifications
Section titled âTechnical Specificationsâ| Parameter | Value | Parameter
| K(1)c,±1/2;hh,±3/2(Ï,T) maximum value | 1 (normalized)
| Rabi parameter (hh)
View Original Abstract
This study presents a theoretical analysis of the spectral and temperature dependence of the single-photon absorption coefficient for linearly and circularly polarized light in semiconductors with diamond and zinc blende lattice structures. Optical transitions involving subbands of light and heavy holes and the conduction band are examined, incorporating effects such as temperature-dependent bandgap, valence-conduction band state mixing, and coherent saturation. The findings indicate that heavy holes contribute approximately 10 times more than light holes to single-photon absorption. Furthermore, the relationship between linear-circular dichroism and light intensity is explored, emphasizing the role of coherent saturation effects.