Optical measurement of Verdet constants of two electrooptic crystals and their applications to optical sensors

Changsheng Li

doi:10.1117/12.2038023

20 December 2013 Optical measurement of Verdet constants of two electrooptic crystals and their applications to optical sensors

Changsheng Li

Author Affiliations +

Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 904406 (2013) https://doi.org/10.1117/12.2038023
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

Verdet constants of beta-barium borate (BBO) and lead molybdate (PMO) crystals are measured experimentally by the method of comparison with a block of terbium-doped glass with a known Verdet constant. Experimental setups mainly include two prism polarizers, a solenoid and ac current supply, and signal processing circuits. The influences of light intensity fluctuation, applied magnetic field and signal processing circuits on measurement result of Verdet constant can be removed by using the method of comparison. For light wavelength of 635nm, the measured Verdet constants respectively are 5.80±0.06 rad/(T.m) for the BBO crystal and 54.6±1.1 rad/(T.m) for the PMO crystal. A novel optical current sensor based on electrooptic compensation is designed in principle using the BBO crystal.

Citation Download Citation

Changsheng Li "Optical measurement of Verdet constants of two electrooptic crystals and their applications to optical sensors", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 904406 (20 December 2013); https://doi.org/10.1117/12.2038023

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