清水出彩虹  

Coherent rainbows come from liquids

作　　者：孙天娇 尚雅轩[1,2] 钱轩 姬扬[1,2] Sun Tian-Jiao;Shang Ya-Xuan;Qian Xuan;Ji Yang(State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences Beijing 100083, China;College of Materials Science and Opto-Electronic Technology, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院半导体研究所,半导体超晶格国家重点实验室,北京100083 [2]中国科学院大学材料科学与光电技术学院,物理科学学院,北京100049

出　　处：《物理学报》2018年第3期1-3,共3页Acta Physica Sinica

基　　金：国家重点研发计划(批准号：2016YFA0301202)、国家自然科学基金(批准号：11674311)和王宽诚教育基金会资助的课题.

摘　　要：利用白光脉冲光纤激光器发出的高强度、高定向性的白光,聚焦地照射水,可以产生定向的、多级的彩色干涉环,这就是"相干彩虹".脉冲激光加热在水里产生了大小相仿的气泡,每个气泡成为散射源.强光导致了空间自相位调制效应,从而产生了相干彩虹.已经在多种液体中观测到了这种现象.When the highly-intensive and highly-directional white light from pulsed fiber laser is focused into water, many directional and colorful rings, ＂coherent rainbows＂, are observed. The laser generates bubbles with similar sizes in the water, which serve as scatters. The intensive light leads to spatial self-phase modulation and thus generates the coherent rainbows. Such a phenomenon has been observed in many kinds of liquids.

关 键 词：彩虹 气泡 空间自相位调制 相干干涉 

分 类 号：O435.1[机械工程—光学工程]