Interband Multiphoton Absorption of Light in  Narrow-Gap Crystals

The spectral dependences of the coefficients of interband three-photon optical transitions for InSb and for some optical transitions are calculated and a numerical analysis of the coefficient of interband three-photon absorption of light is carried out, which taken into account the contribution to the three-photon absorption of optical transitions occurring during the simultaneous absorption of two photons in the Kane model. Interband three-photon optical transitions in crystals of the InSb and type are classified, and the spectral dependence of some optical transitions is analyzed. The coefficient of linear-circular dichroism of interband three-photon absorption in a crystal in the Kane model is calculated. KEY WORDS: interband three-photon optical transitions, spectral dependence, crystal.

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Межзонный двухфотонный линейно-циркулярный дихроизм в полупроводниках в приближении Кейна

Физика и техника полупроводников ◽

10.21883/ftp.2022.01.51813.9719 ◽

2022 ◽

Vol 56 (1) ◽

pp. 61

Author(s):

В.Р. Расулов ◽

Р.Я. Расулов ◽

Б.Б. Ахмедов ◽

И.А. Муминов

Keyword(s):

Circular Dichroism ◽

Photon Absorption ◽

Degree Of Polarization ◽

Optical Transitions ◽

Narrow Gap ◽

Two Photon Absorption ◽

Narrow Gap Semiconductors ◽

Two Photon ◽

Absorption Of Light ◽

Circular Dichroïsm

Interband two-photon optical transitions are classified and expressions are obtained for the matrix elements in a narrow-gap semiconductor depending on the band parameters, degree of polarization, and light frequency. It is shown that the main contribution to two-photon linear-circular dichroism in narrow-gap 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 the light, and a quantitative analysis of the coefficient of linear-circular dichroism of two-photon absorption of light is carried out. Expressions are obtained for the spectral dependence of the coefficient of interband two-photon absorption of light in narrow-gap semiconductors in the Kane model.

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ON THE THEORY OF ONE-PHOTON ABSORPTION OF POLARIZED LIGHT IN NARROW-GAP CRYSTALS. EXCLUDING THE EFFECT OF COHERENT SATURATION

EurasianUnionScientists ◽

10.31618/esu.2413-9335.2021.5.82.1234 ◽

2021 ◽

Vol 5 (1(82)) ◽

pp. 53-56

Author(s):

Y. Rustam ◽

B. Bakhodir ◽

A. Islombek ◽

G. Shermatova ◽

Sh. Boymuradova

Keyword(s):

Spectral Dependence ◽

Polarized Light ◽

Point Of View ◽

Photon Absorption ◽

Matrix Elements ◽

Narrow Gap ◽

Light Absorption Coefficient ◽

Absorption Of Light ◽

The Matrix ◽

Band Absorption

In this work, from a microscopic point of view, the linear-circular dichroism of one-photon between band absorption of light in the Kane approximation in narrow-gap crystals is investigated. The matrix elements of onephoton interband optical transitions and the spectral dependence of the light absorption coefficient are calculated.

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Двух- и трехфотонный линейно-циркулярный дихроизм в полупроводниках кубической симметрии

Физика и техника полупроводников ◽

10.21883/ftp.2020.11.50082.9469 ◽

2020 ◽

Vol 54 (11) ◽

pp. 1181

Author(s):

В.Р. Расулов ◽

Р.Я. Расулов ◽

Р.Р. Султонов ◽

Б.Б. Ахмедов

Keyword(s):

Photon Absorption ◽

Optical Transitions ◽

Matrix Elements ◽

Hole Conductivity ◽

Cubic Symmetry ◽

Simultaneous Absorption ◽

Absorption Of Light ◽

The Matrix ◽

Temperature Dependences ◽

Polarized Radiation

The linear-circular dichroism of two and three photon absorption of light in semiconductors of cubic symmetry of hole conductivity is theoretically investigated. The matrix elements of two and three-photon optical transitions occurring between the subbands of the semiconductor valence band are calculated. In this case, transitions associated with both non-simultaneous absorption of individual photons and simultaneous absorption of two photons are taken into account, and the spectral and temperature dependences of the coefficient of two and three-photon absorption of polarized radiation are determined.

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ON THE THEORY OF ONE-PHOTON ABSORPTION OF POLARIZED LIGHT IN NARROW-GAP CRYSTALS. TAKING INTO ACCOUNT THE EFFECT OF COHERENT SATURATION

EurasianUnionScientists ◽

10.31618/esu.2413-9335.2021.5.82.1235 ◽

2021 ◽

Vol 5 (1(82)) ◽

pp. 56-59

Author(s):

Ya. Rustam ◽

B. Bakhodir ◽

M. Ikbol ◽

N. Shokhrukh

Keyword(s):

Circular Dichroism ◽

Polarized Light ◽

Point Of View ◽

Photon Absorption ◽

Narrow Gap ◽

Light Absorption Coefficient ◽

Absorption Of Light ◽

The Matrix ◽

Band Absorption ◽

Circular Dichroïsm

In the article, from a microscopic point of view, the linear-circular dichroism of one-photon between band absorption of light in the Kane approximation in narrow-gap crystals is investigated. The linear-circular dichroism of one-photon absorption of polarized light is calculated taking into account the effect of coherent saturation in photoexcited charge carriers. The matrix elements of one-photon interband optical transitions and the corresponding linear-circular dichroism and the spectral dependence of the light absorption coefficient are calculated.

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Two and three photonic linear circular dichroisms in semiconductors with cubic symmetry

Izvestiya vysshikh uchebnykh zavedenii. Fizika ◽

10.17223/00213411/63/11/173 ◽

2020 ◽

pp. 173-178

Author(s):

R.Ya. Rasulov ◽

◽

V. R. Rasulov ◽

I. Eshboltaev ◽

R.R. Sultonov ◽

...

Keyword(s):

Polarized Light ◽

Photon Absorption ◽

Optical Transitions ◽

Matrix Elements ◽

Hole Conductivity ◽

Cubic Symmetry ◽

Simultaneous Absorption ◽

Absorption Of Light ◽

The Matrix ◽

Temperature Dependences

The linear-circular dichroism of two and three photon absorption of light in semiconductors with cubic symmetry of hole conductivity is theoretically investigated. The matrix elements of two and three-photon optical transitions occurring between the subbands of the semiconductor valence band are calculated. In this case, transitions associated with both non-simultaneous absorption of individual photons and simultaneous absorption of two photons are taken into account, and the spectral and temperature dependences of the coefficient of two and three-photon absorption of polarized light are determined.

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