Sagnac干涉仪中Pancharatnam-Berry位相的电光调制  

Modulation of Pancharatnam-Berry Phase by Electro-Optic Method in Sagnac Interferometer

作　　者：杨灏 刘念华[1,2] 

机构地区：[1]南昌大学物理系,江西南昌330031 [2]南昌大学高等研究院,江西南昌330031

出　　处：《量子光学学报》2011年第4期253-257,共5页Journal of Quantum Optics

基　　金：国家自然科学基金(10664002);教育部长江学者与创新团队发展计划(IRT0730)

摘　　要：本文研究了在Sagnac干涉仪中插入单轴晶体,利用单轴晶体的纵向电光效应调制Pancharatnam-Berry位相。由于Sagnac干涉仪的顺、逆时针环路之间光程差为零,所以有利于区分顺、逆时针环路之间的非光程差引起的Pancharatnam-Berry相。本文结果发现在施加的电压连续变化下,由于单轴晶体纵向电光效应的特点使得Pancharatnam-Berry相发生两次突变,而顺、逆时针环路的光相干叠加后的光强却连续变化。We study the modulation of Pancharatnam-Berry phase by lonexugitudinal electro-optical modulator which is an uniaxial crystal inserted into Sagnac interferometer. Because the difference of optical paths between clockwise and anticlockwise loop is zero, under the condition of zero-phase-difference related to the optical paths, the Pancharatnam-Berry phase between clockwise and anticlockwise loop can be distinguished more favorably. The results show that when the applied voltage vary continuously, the Pancharatnam-Berry phase jumps twice due to the characteristics of uniaxial crystal, while the coherent superposition intensity vary continuously.

关 键 词：Pancharatnam—Berry相 SAGNAC干涉仪 电光调制 

分 类 号：O431[机械工程—光学工程]