Magnetic field sensing using laser written birefringent scattering medium

Przemyslaw Falak; Timothy Lee; Qi Sun; Tom Vettenburg; David B. Phillips; Gilberto Brambilla; Martynas Beresna

doi:10.1117/12.2678130

23 May 2023 Magnetic field sensing using laser written birefringent scattering medium

Przemyslaw Falak, Timothy Lee, Qi Sun, Tom Vettenburg, David B. Phillips, Gilberto Brambilla, Martynas Beresna

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126432S (2023) https://doi.org/10.1117/12.2678130
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

We demonstrate a polarization analyser based on processing of speckle patterns generated by a scattering medium. Each speckle pattern at a given wavelength and polarization state is unique and deterministic, and thus the polarization angle alters the speckle pattern motif. The polarization state of a given input light is obtained using reconstructive linear algebra methods. The system consists of a femtosecond laser written scattering chip and a CMOS sensor and contains no moving parts, making the proposed solution is low-cost and compact. The linear polarization angle was accurately reconstructed over a 0-20° test range, with 6 arcminutes (1/10° ) standard error. To demonstrate an application as a polarimeter, we used the system to measure Faraday rotation in a SF59 lead silicate glass within an electromagnet. The magnetic field was successfully traced by determining the induced changes in the input beam’s linear polarization angle in the range 0-80 mT with 10 mT standard error.

Citation Download Citation

Przemyslaw Falak, Timothy Lee, Qi Sun, Tom Vettenburg, David B. Phillips, Gilberto Brambilla, and Martynas Beresna "Magnetic field sensing using laser written birefringent scattering medium", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126432S (23 May 2023); https://doi.org/10.1117/12.2678130

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
4 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polarization

Laser scattering

Magnetic sensors

Magnetism

Speckle pattern

Light scattering

Glasses

Show All Keywords

Keywords/Phrases

Search In:

Publication Years