A new ultrasensitive nonlinear magneto-optical Voigt device operating in the blue spectral region

Watheq Al-Basheer

doi:10.1117/12.2665248

5 June 2023 A new ultrasensitive nonlinear magneto-optical Voigt device operating in the blue spectral region

Watheq Al-Basheer

Proceedings Volume 12569, Nonlinear Optics and Applications XIII; 125690D (2023) https://doi.org/10.1117/12.2665248
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Conference Poster

Abstract

Voigt effect is a nonlinear magneto-optical phenomenon originating from the rotation and ellipticity of linearly-polarized light as it travels in optically active media. In this study, the detailed features and capabilities of a newly developed ultra-sensitive Voigt rotation device consisting of a GaN-based diode emitting light of wavelength range 400 – 480 nm as the light source. A transverse 1 T magnetic field is used to trigger the optical media response. A sensitive and fast semiconducting detector is employed to detect the finest rotation in light polarization. The detector is also coupled with an electronic circuit board which is configured to record changes in the polarization direction of the transmitted light relative to the reference polarizer, in addition to measuring the absolute magnetic field strength. The device sensitivity and modes of operation will also be presented. Moreover, a theoretical model to simulate polarized light transmission through optically active media will be presented and compared with experimental results.

Citation Download Citation

Watheq Al-Basheer "A new ultrasensitive nonlinear magneto-optical Voigt device operating in the blue spectral region", Proc. SPIE 12569, Nonlinear Optics and Applications XIII, 125690D (5 June 2023); https://doi.org/10.1117/12.2665248

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