It is shown that the main contribution in the two-photon linear-circular dichroism in narrowgap semiconductors is made by optical transitions proceeding from the subband of light holes to the conduction band. The dependences of the partial coefficients of interband two-photon absorption of light, which differ from each other by the types of optical transitions, are analyzed, depending on the degree of polarization of light, and a quantitative analysis of the coefficient of linear-circular dichroism of two-photon absorption of light is carried out. Expressions for the spectral dependence of the coefficient of interband two-photon absorption of light in narrow-gap semiconductors in the Kane model are obtained.
| Mualliflar | Расулов, Р.Я., Расулов, В.Р., Ахмедов, Б.Б., Муминов, И.А. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2022-02-07 |
| Jild | 24 |
| Son | 1 |
| Betlar | 19-26 |
| Til | Rus |
| DOI | 10.52304/.v24i1.301 |
DOI: 10.52304/.v24i1.301 · Maqolaning asl sahifasi
междузонное двухфотонное поглощения света, приближение Кейна, оптический переход, полупроводник, начальное состояние, виртуальное состояние, конечное состояние, interband two-photon absorption of light, Kane's approximation, optical transition, semiconductor, initial state, irtual state, final state
Recently, the use of cold atmospheric plasmas for cancer therapy has become one of the most exciting topics of plasma application. Despite promising results from a large number of studies, the underlying mechanisms by…
The process of parametric amplification of short (femtosecond) laser pulses in crystals with a regular domain structure is theoretically studied. The main attention is paid to the formation of a signal pulse under the…
The equations for linear and nonlinear optic secceptibilities of spherical quantum dots for isolated media in which electrons connected with Gelman reverse quadratical potential have been obtained. For their solving we…
We consider, by analytical and numerical means, the dynamics of a matter-wave soliton bouncing on the reflecting surface (atomic mirror) under the influence of gravity, when twobody interactions between atoms are…
In the study, the correlation of optical and photocatalytic properties of ZnO nanorods and ZnO/Ag nanocomposite materials were investigated. ZnO nanorods were synthesized at low temperatures by the hydrothermal method…
The high efficiency of using the Raman spectroscopy method in complex investigations of a number of physical properties of research objects has been demonstrated. On the example of the analysis of the Raman spectra of…
The electrical conductivity of the SAV-1 structural alloy, irradiated with fast neutrons with a fluence of 1017–1019 n/cm2 , was investigated in the temperature range 290–480 K. A nonlinear dependence of the specific…
The article presents the results of the development and creation of a new pilot-industrial installation in the form of an inclined rotary kiln for processing fluoroammonium siliconcontaining materials. It is shown that…
In present work the experimental results of the specific total alpha activity of natural alphaemitting radionuclide from ancient and standard bones as well as soils from the places of detection, measured by the…
The article presents the results of research using the instrumental neutron activation analysis for monitoring the state of environment in the Tashkent region and the Tashkent city. Data on the macro- and microelement…