肥皂膜中光须现象的实验研究  

Experimental Study of the Phenomenon of Light Whiskers in Soap Films

作　　者：王丽敏 林语嫣 赵辰梦 王震[1] WANG Limin;LIN Yuyan;ZHAO Chenmeng;WANG Zhen(School of Physics and Electronic Technology,Liaoning Normal University,Dalian 116029,China)

机构地区：[1]辽宁师范大学物理与电子技术学院,辽宁大连116029

出　　处：《大学物理实验》2022年第4期27-31,共5页Physical Experiment of College

基　　金：大连市科技创新基金(2021JJ13FG97)。

摘　　要：当激光束以小角度射入肥皂泡时,薄膜内部会出现快速变化的光的细小分支,这一现象称之为光分支流,也称光须。本文利用实验主要探究了平面肥皂膜的面积大小、激光波长以及激光强度等因素对光分支流现象的影响。研究结果表明,平面肥皂膜面积越大,光分支流现象越明显;激光功率一定时,采用波长更短的绿光作为光源,相比红光更容易观测到光分支流现象;当激光波长一定时,光强越强,光分支流现象越明显。When the laser beam is incident into the soap films at a small angle,there will be a small branch of light which changes rapidly in the soap film.This phenomenon is called branch flow of light,also known as“light whisker”.The effects of the area of plane soap film,laser wavelength and laser intensity on the phenomenon of branch flow of light are investigated by experiments.The results show that the larger the area of soap film is,the more obvious the phenomenon of branch flow of light is;when the laser power is fixed,the green light with shorter wavelength is used as the light source,and the phenomenon of branch flow of light is easier to be observed than the red light;when the laser wavelength is fixed,the light intensity is stronger,the phenomenon of branch flow of light is more obvious.

关 键 词：光须现象 平面肥皂膜 光源波长 光源强度 肥皂液浓度 

分 类 号：O4-34[理学—物理]