Ryu Hee Jung, Hwang Jiyong, Kim Jongyoon, Lee Ji-Hoon
Appl Opt. 2018 Jan 10;57(2):268-272. doi: 10.1364/AO.57.000268.
We investigated the dependence of the birefringence of polystyrene (PS) film with a negative optical birefringence on the stretching conditions. We varied the stretching ratio (SR), stretching speed (SS), and stretching temperature (ST), and measured the inplane birefringence and the N coefficient of the PS film. The inplane birefringence was increased with greater SR and SS but decreased with greater ST. The N coefficient of the stretched PS film was around zero and showed similar dependence on the stretching conditions like inplane birefringence.
我们研究了具有负光学双折射的聚苯乙烯(PS)薄膜的双折射对拉伸条件的依赖性。我们改变了拉伸比(SR)、拉伸速度(SS)和拉伸温度(ST),并测量了PS薄膜的面内双折射和N系数。面内双折射随着SR和SS的增大而增加,但随着ST的升高而降低。拉伸PS薄膜的N系数约为零,并且对拉伸条件的依赖性与面内双折射类似。