Electro-optic response of blue phase II system with electrostriction effect.

• Main Authors: Chian-Dai Wey, 魏千玳
• Other Authors: 陳惠玉
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5198009%22.&searchmode=basic

碩士 === 國立中興大學 === 物理學系所 === 107 === The thesis proposes to explore the relation between the electrostriction effect and nonlinear electro-optical performance of a thermally stable cubic blue phase (BPII). There are several effects are known when an electric field is applied on cubic BP, and they are the effect of director reorientation, electrostriction, and phase transition. To observe the electro-optical characteristics and the effect of electrostriction on BPII, the thesis uses several methods: (a) recording spectrum changed with electric field, (b) measuring the response time, (c) observing the lattice via POM. Experimental results show that Bragg reflection wavelength shifts to longer wavelength and the electro-optical response time increases due to the influence of the electrostriction effect. Besides, one can see the correlation between the secondary electro-optic effect and the lattice deformation.