Zakretanje ravnine polarizacije svjetlosti pomoću Faradayevog efekta

master's thesis

• Title (english): Rotation of light polarization plane by Faraday effect
• Author: Luka Popović
• Mentor: Mario Novak (mentor)
• Committee member: Mario Novak (predsjednik povjerenstva)
• Committee member: Željko Skoko (član povjerenstva)
• Committee member: Maja Planinić (član povjerenstva)
• Committee member: Ivan Kokanović (član povjerenstva)
• Committee member: Dalibor Paar (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Physics); Zagreb
• Defense date and country: 2021-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract

Neke optički neaktivne tvari mogu postati optički aktivne u prisustvu magnetskog polja. Elektromagnetsko zračenje se prolaskom kroz transparentne tvari s velikom dielektričnom permitivnošću u prisustvu vanjskog magnetskog polja, kao posljedica optičke aktivnosti, očituje u zakretanju ravnine polarizacije što je poznato kao Faradayev efekt. Mjereni su kutovi zakretanja ravnine polarizacije svijetlosti valnih duljina 405 nm, 450 nm, 532 nm i 650 nm za kristale optičkog stakla (kvarc), kalcijevog klorida (KCl), natrijevog klorida (NaCl) i kalijevog bromida (KBr) te za maslinovo ulje Olivenö𝑙̈ – Roth. Kut zakreta ravnine polarizacije svjetlosti proporcionalan je s magnetskim poljem, duljinom uzorka te konstantom poznatom kao Verdetova konstanta. Cilj rada bio je izmjeriti Verdetovu konstantu za gore spomenute materijale te usporediti eksperimentalno dobivene vrijednosti s eventualnim teorijskim vrijednostima.

Abstract (english)

Some optically inactive substances can become optically active in the presence of a magnetic field. Electromagnetic radiation, by passing through transparent substances with a high dielectric permittivity in the presence of an external magnetic field, as a consequence of optical activity, is manifested in the rotation of the plane of polarization known as the Faraday effect. The angles of rotation of the plane of polarization of light of wavelengths 405 nm, 450 nm, 532 nm and 650 nm were measured for the crystals made of flint glass, calcium chloride (KCl), sodium chloride (NaCl) and potassium bromide (KBr), and for olive oil Olivenö𝑙̈ - Roth. The angle of rotation of the plane of polarization of light is proportional to the magnetic field, the length of the sample, and a constant known as the Verdet constant. The goal of this thesis was to measure the Verdet constant for the above-mentioned materials and to compare the experimentally obtained values with possible theoretical values/models.

• Keywords: optička aktivnost; polarizacija svjetlosti; zakretanje ravnine polarizacije; Faradayev efekt; Verdetova konstanta; optičko staklo (kvarc); kalijev klorid (KCl); natrijev klorid (NaCl); kalijev bromid (KBr); maslinovo ulje
• Keywords (english): optical activity; light polarization; polarization plane rotation; Faraday effect; Verdet constant; flint glass; potassium chloride (KCl); sodium chloride (NaCl); potassium bromide (KBr); olive oil
• Language: croatian
• URN:NBN: urn:nbn:hr:217:855588
• Study programme: Title: Physics; specializations in: Education; Course: Education; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra edukacije fizike (magistar/magistra edukacije fizike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-11-10 11:31:17