Poynting vector in transfer-matrix formalism for the calculation of light absorption profile in stratified isotropic optical media

Résultats de recherche: Contribution à un journal/une revueLettre

Résumé

In spite of the fact that solutions to Maxwell's equations in stratified isotropic optical media are well known, it appears that an explicit expression of the Poynting vector flux spatial evolution inside such a medium has not been derived so far. Based on exact electromagnetic field solutions in the transfer-matrix formalism, I derive such an expression and show that, due to the presence of counterpropagating waves in the medium, an additional contribution to the flux appears that exists only in optically absorbing layers and arises from the interference between these waves. Based on this theory, the concept of incremental absorption is introduced for the calculation of the light absorption profile along the stratification direction. As an illustration of this concept, absorption profiles in a Si-based thin-film tandem solar cell are predicted at typical wavelengths.
langue originaleAnglais
Pages (de - à)3960-3962
Nombre de pages3
journalOptics Letters
Volume36
Numéro de publication20
Les DOIs
étatPublié - 15 oct. 2011

Empreinte digitale

electromagnetic absorption
formalism
profiles
stratification
Maxwell equation
electromagnetic fields
solar cells
interference
thin films
wavelengths

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title = "Poynting vector in transfer-matrix formalism for the calculation of light absorption profile in stratified isotropic optical media",
abstract = "In spite of the fact that solutions to Maxwell's equations in stratified isotropic optical media are well known, it appears that an explicit expression of the Poynting vector flux spatial evolution inside such a medium has not been derived so far. Based on exact electromagnetic field solutions in the transfer-matrix formalism, I derive such an expression and show that, due to the presence of counterpropagating waves in the medium, an additional contribution to the flux appears that exists only in optically absorbing layers and arises from the interference between these waves. Based on this theory, the concept of incremental absorption is introduced for the calculation of the light absorption profile along the stratification direction. As an illustration of this concept, absorption profiles in a Si-based thin-film tandem solar cell are predicted at typical wavelengths.",
author = "O. Deparis",
year = "2011",
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doi = "10.1364/OL.36.003960",
language = "English",
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pages = "3960--3962",
journal = "Optics Letters",
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publisher = "The Optical Society",
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Poynting vector in transfer-matrix formalism for the calculation of light absorption profile in stratified isotropic optical media. / Deparis, O.

Dans: Optics Letters, Vol 36, Numéro 20, 15.10.2011, p. 3960-3962.

Résultats de recherche: Contribution à un journal/une revueLettre

TY - JOUR

T1 - Poynting vector in transfer-matrix formalism for the calculation of light absorption profile in stratified isotropic optical media

AU - Deparis, O.

PY - 2011/10/15

Y1 - 2011/10/15

N2 - In spite of the fact that solutions to Maxwell's equations in stratified isotropic optical media are well known, it appears that an explicit expression of the Poynting vector flux spatial evolution inside such a medium has not been derived so far. Based on exact electromagnetic field solutions in the transfer-matrix formalism, I derive such an expression and show that, due to the presence of counterpropagating waves in the medium, an additional contribution to the flux appears that exists only in optically absorbing layers and arises from the interference between these waves. Based on this theory, the concept of incremental absorption is introduced for the calculation of the light absorption profile along the stratification direction. As an illustration of this concept, absorption profiles in a Si-based thin-film tandem solar cell are predicted at typical wavelengths.

AB - In spite of the fact that solutions to Maxwell's equations in stratified isotropic optical media are well known, it appears that an explicit expression of the Poynting vector flux spatial evolution inside such a medium has not been derived so far. Based on exact electromagnetic field solutions in the transfer-matrix formalism, I derive such an expression and show that, due to the presence of counterpropagating waves in the medium, an additional contribution to the flux appears that exists only in optically absorbing layers and arises from the interference between these waves. Based on this theory, the concept of incremental absorption is introduced for the calculation of the light absorption profile along the stratification direction. As an illustration of this concept, absorption profiles in a Si-based thin-film tandem solar cell are predicted at typical wavelengths.

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DO - 10.1364/OL.36.003960

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SP - 3960

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JO - Optics Letters

JF - Optics Letters

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