Laser-induced pattern formation from homogeneous polyisoprene solutions
Laser-induced pattern formation from homogeneous polyisoprene solutions作者机构:Institute of Opto-Electronics Harbin Institute of Technology College of Science Inner Mongolia University of Technology School of Management Harbin Institute of Technology
出 版 物:《Chinese Physics B》 (中国物理B(英文版))
年 卷 期:2008年第17卷第6期
页 面:2156-2159页
核心收录:
学科分类:080901[工学-物理电子学] 0809[工学-电子科学与技术(可授工学、理学学位)] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程(可授工学、理学学位)] 0704[理学-天文学] 0803[工学-光学工程]
主 题:laser-induced pattern formation polyisoprene
摘 要:This paper reports that the pattern formation in homogeneous solutions of polyisoprene in toluene saturated with C60 induced by a continuous-wave visible laser is observed experimentally. The transmitted beam patterns change with the increase of the laser irradiation time. In the initial phase, the patterns with concentric ring-shaped structure are formed. In the end, the patterns become speckle-shaped. The incubation time of the transmitted beam widening is inversely proportional to the laser power density and solution concentration. The pattern formation results from the optical-field-induced refractive index changes in the solutions, but the mechanism of optical-field-induced refractive index changes in the polymer solutions needs to be further studied.