高斯光束中细胞横向受力分析  

Theoretical Analysis of the Force on a Cell in Gaussian Mode Optical Beam

作　　者：胡居广[1] 查隆军 邓元龙[3] 

机构地区：[1]深圳大学师范学院物理系,中国深圳518060 [2]深圳市桂花小学,中国深圳518110 [3]深圳大学工程技术学院,中国深圳518060

出　　处：《激光生物学报》2005年第5期339-342,共4页Acta Laser Biology Sinica

基　　金：深圳大学科研启动基金资助项目(200532)

摘　　要：按照几何光学的原理建立了高斯光束中细胞受力的力学模型,并利用数值计算,得到了细胞偏离光轴受到的向轴回复力大小与细胞的离轴距离X0、直径2R等的关系。结果表明高斯光束对大小不同的细胞有相同的光学势阱宽度,对较大细胞势阱较深所以较容易稳定俘获。讨论了光钳设计中注意的问题。According to the geometrical optical principle, a model of cell in Gaussian mode optical beam is established to analyze the cross recovering forces on the cell. The relation between the forces and the cell＇ s radius 2R and distance X0 to the axis of the beam is presented numerically. Gaussian mode optical beam can trap different size of cells in the same well width, but larger cell can be more tightly trapped for its deeper well. The design of an optical tweezers is also discussed.

关 键 词：高斯光束 横向回复力 光钳 

分 类 号：O435[机械工程—光学工程] Q66[理学—光学]