A method for compensating multiple-reflection effect in measurement of electro-optic coefficient

作者：Iwamura Tomo^*; Suka Shota; Liu Xin Yi; Umegaki Shinsuke

来源：Optical Review, 2009, 16(1): 4-10.

DOI：10.1007/s10043-009-0002-y

• electro-optic effect
• electro-optic coefficient
• Mach-Zehnder interferometer
• multiple-reflection
• potassium titanyl phosphate

An electro-optic (EO) coefficient can be evaluated from a modulated signal by applying an AC voltage to a plane-parallel sample in an interferometer. We proposed a method for compensating multiple-reflection of a light in the sample. The multiple-reflection causes errors in the evaluated EO coefficient. In measurement using a Mach-Zehnder interferometer, we analyzed the multiple-reflection and clarified its unfavorable effect. The effect could be avoided simply by selecting the incidence angle of the light on the sample. We confirmed this by measuring the EO coefficient of a KTiOPO(4) crystal.

• 出版日期2009-1