Inverse problem of bragg's scattering for measuring the spectrum surface roughness in the optical gradient waveguide

A new method for measuring the spectrum of surface roughness based on Bragg scattering, is proposed. This method is characterized by its high precision of measurement of the spatial amplitudes and frequencies. Was determined the rang of spatial frequencies (periods) of harmonics in the roughness spectrum surfaces (0,π) (0; π). When the rotatiońs angle of grating is (0,π/4) will be a forward scattering or Bragǵs deflector. At rotatiońs angle of grating is (π/2,π/4) or (-3π/4,-π/2) will a Bragǵs mirror. The measurements are made in a gradient waveguide, obtained by ion exchange method. © 2017 SPIE.

Авторы
Grishaeva N. 2 , Osovitsky A. 2 , Espinosa N.1 , Cadena L.1 , Vega C.1 , Alvarez J.1
Издательство
Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, United States
Язык
Английский
Статус
Опубликовано
Номер
1037209
Том
10372
Год
2017
Организации
  • 1 Universidad de Las Fuerzas Armadas ESPE, Ecuador
  • 2 Russian Peoples' Friendship University RUDN, Russian Federation
Ключевые слова
Mean square deviation; Surface roughness
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/5880/
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