The Quasi-optical Equation in Media with Weak Absorption

N. N. Rosanov

doi:10.1134/S0030400X19080216

The Quasi-optical Equation in Media with Weak Absorption

Authors: Rosanov N.N.¹^,2^,3
Affiliations:
1. Vavilov State Optical Institute
2. Ioffe Institute, Russian Academy of Sciences
3. ITMO University
Issue: Vol 127, No 2 (2019)
Pages: 285-287
Section: Physical Optics
URL: https://ogarev-online.ru/0030-400X/article/view/166066
DOI: https://doi.org/10.1134/S0030400X19080216
ID: 166066

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Abstract
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Abstract

The form of a quasi-optical equation for a beam of monochromatic radiation propagating through a layer of a weakly absorbing linear medium is analyzed. It is concluded that the standard form of this equation should be modified using an “effective diffusion coefficient.”

Keywords

Quasi-optical approximation, slowly varying envelope method, effective diffusion coefficient

About the authors

N. N. Rosanov

Vavilov State Optical Institute; Ioffe Institute, Russian Academy of Sciences; ITMO University

Author for correspondence.
Email: nnrosanov@mail.ru
Russian Federation, St. Petersburg, 199053; St. Petersburg, 194021; St. Petersburg, 197101

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