Vol. 12, no.4, 2020


Optimization of a Polarization Nephelometer

Viktor G. Oshlakov, Anatoly P. Shcherbakov

V.E. Zuev Institute of Atmospheric Optics SB RAS, http://www.iao.ru/
Tomsk 634055, Russian Federation
E-mail: oshlakov@iao.ru, molnija2@inbox.ru
Yaroslav A. Ilyushin
Lomonosov Moscow State University, https://www.msu.ru/
Moscow 119991, Russian Federation
E-mail: ilyushin@physics.msu.ru

Received July 07, 2020; peer reviewed July 27, 2020; accepted August 10, 2020

Abstract. The effect of parameters of a polarization nephelometer on its accuracy characteristic is analyzed. Errors in approximation of the actual scattering volume and actual optical beam by the elementary scattering volume and elementary beam are considered. A five-wave monochromatic source of radiation with the high spectral intensity of 0.15÷0.6 W is described. The design of polarization units is demonstrated.

Keywords: polarization, nephelometer, non-isotropic scatterer, scattering matrix, elementary volume, elementary optical beam, approximation error, LED, encoder, microprocessor, precision position control, pulse width modulation, PID controller

UDC 535.36+530.1

RENSIT, 2020, 12(3):437-450. DOI: 10.17725/rensit.2020.12.437.

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/361/12(4)437-450e.pdf