A. V. Prokof'ev, I. V. Pleshakov, M. Shlyagin, P. M. Agruzov, E. E. Bibik, Yu. I. Kuzmin, “Noise characteristics of the optical response of ferrofluids to a magnetic field”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2019, Volume 45, Issue 15,Pages <nobr>3

This article is cited in 2 papers

Noise characteristics of the optical response of ferrofluids to a magnetic field

A. V. Prokof'ev^a, I. V. Pleshakov^ab, M. Shlyagin^c, P. M. Agruzov^a, E. E. Bibik^d, Yu. I. Kuzmin^a

^a Ioffe Institute, St. Petersburg
^b Peter the Great St. Petersburg Polytechnic University
^c Centro de Investigación Científica y de Educación Superior de Ensenada
^d State Technological Institute of St. Petersburg (Technical University)

Abstract: The noise generated by different ferrofluid samples when probed by the fiber-optic method has been investigated. It is shown that switching on a magnetic field significantly increases the noise, which is presumably related to fluctuations accompanying the process of aggregate formation. The dependences of the rms noise on the field strength and probe-light intensity have been experimentally determined. A slow decrease in the rms noise after switching off the magnetic field has been found, which indicates relaxation of the aggregates formed by the field.

Keywords: magnetooptics, ferrofluids, optical fiber, optical noise.

Received: 22.02.2019
Revised: 19.03.2019
Accepted: 29.04.2019

DOI: 10.21883/PJTF.2019.15.48076.17745