物理学报2012，Vol.61Issue(15)：189-196,8.
用液晶空间光调制器产生光阱阵列
Generation of the array of optical traps by liquid crystal spatial light modulator
摘要
Abstract
Liquid crystal spatial light modulator（LC-SLM） can be readily used to fabricate the diffractive optical elements.However,a disadvantage of the finite resolution always exists in LC-SLM.In this paper,a new scheme of fabricating phase grating with LC-SLM is proposed to produce one-dimensional（ID） and two-dimensional（2D） array of optical traps.The advantage of the LC-SLM is fully utilized and the disadvantage is well avoided in our scheme.The phase distribution of the grating is optimized by using iterative Fourier series expansion.The grating is designed by simulation according to the LC-SLM technique parameters,and the corresponding light intensity distribution is calculated.The results show that the array has very high peak value intensity and big gradient of intensity by illuminating the grating with a large detuning and low power laser.The optical dipole potential of trapping cold atoms achieves the order of mK,and the interaction force between atom and optical field is much greater than the atom gravity.关键词
原子光学/光阱阵列/空间光调制器Key words
atomic optics/array of optical traps/spatial light modulator分类
数理科学引用本文复制引用
顾宋博,徐淑武,陆俊发,纪宪明,印建平..用液晶空间光调制器产生光阱阵列[J].物理学报,2012,61(15):189-196,8.基金项目
国家自然科学重点基金 （）
科技部量子调控重大研究计划项目 （）
华东师范大学精密光谱科学与技术国家重点实验室开放基金 （）
江苏省自然科学基金（批准号：BK2008183）资助的课题 （）
