High magnetic field measurement utilizing Faraday rotation in SF11 glass in simplified diagnostics

With the commercialization of powerful solid-state lasers as pointer lasers, it is becoming simpler nowadays for the launch and free-space reception of polarized light for polarimetric applications. Additionally, because of the high power of such laser diodes, the alignment of the received light on...

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Bibliographic Details
Published in:Applied optics (2004) 2017-04, Vol.56 (10), p.2873-2877
Main Authors: Dey, Premananda, Shukla, Rohit, Venkateswarlu, D
Format: Article
Language:English
Subjects:
Analyzers
Faraday effect
Glass
Launches
Magnetic fields
Polarimetry
Sheets
Verdet constant
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Summary:With the commercialization of powerful solid-state lasers as pointer lasers, it is becoming simpler nowadays for the launch and free-space reception of polarized light for polarimetric applications. Additionally, because of the high power of such laser diodes, the alignment of the received light on the small sensor area of a photo-diode with a high bandwidth response is also greatly simplified. A plastic sheet polarizer taken from spectacles of 3D television (commercially available) is simply implemented as an analyzer before the photo-receiver. SF11 glass is used as a magneto-optic modulating medium for the measurement of the magnetic field. A magnetic field of magnitude more than 8 Tesla, generated by a solenoid has been measured using this simple assembly. The measured Verdet constant of 12.46 rad/T-m is obtained at the wavelength of 672 nm for the SF11 glass. The complete measurement system is a cost-effective solution.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.56.002873