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The Research of Temperature-Independent Magneto-Optical Glasses

Author: MaHaiYun
Tutor: SongBo；LuMin
School: Changchun University of Science and Technology
Course: Materials Science
Keywords: magneto-optical glass Verdet constant Faraday Effect diamagnetic glass
CLC: TQ171.1
Type: Master's thesis
Year: 2010
Downloads: 56
Quote: 0
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Abstract


Magneto-optical glasses were an important functional material which widely used in some magneto-optical devices such as optical islators,optical switches,magneto-optic modulators, laser gyroscopes.However,one of the most important factors-the temperature effect were a restrictive aspect for the further applications of magneto-optical glasses.In this paper, Magneto-optical glasses CG-13 which had a low temperature dependence of verdet constant were successfully prepared by doping Tb3+ in diamagnetic glasses.In this paper,a testing equipment had been designed and bulided to measure verdet constant of magneto-optical glasses at different wavelength and temperature.The verdet constant of glasses Tb26,CG-13and CG-14 were measured at different wavelength（532nm, 650nm,780nm and 808nm） and different temperature（25℃,45℃,65℃and 85℃）.The experimental results showed that theΔV/V value of Tb26 and CG-13 glasses were about -0.325%/℃and 6.9×10-5/℃～1.05×10-4/℃respectively.For CG-14 glass,itsΔV/V value were 2.4×10-4℃～3.15×10-4℃which were 3～4 times more than CG-13.

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CLC: > Industrial Technology > Chemical Industry > Silicate > Glass Industry > Basic theory
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