摘要
由于能够提供独特的光-物质交互界面,携带净轨道角动量的各类涡旋光束成为光场调控研究的热点问题。随着相关研究的不断深入,光镊以及非线性光学领域都特别需要一种具有均一空间强度分布且无曲率相位梯度的"完美平顶涡旋"光束。针对这一问题,从理论出发基于超高斯模型提出"完美平顶涡旋"的复振幅计算全息产生技术,并利用相位型空间光调制器构成的数字傅里叶变换系统实验论证了"完美平顶涡旋"在焦场区域的可控产生与调控,重点阐述了在给定孔径限制条件下获取光滑涡旋奇点的强度控制原理及方法。
Because they can provide a unique light-matter interface,various vortex beams carrying net orbital angular momentum have become a hot issue in structured light science.With the developing of the field,“perfect flattop vortex beams”that have both homogeneous intensity and phase distribution are particularly desired in the field of optical tweezers and nonlinear optics.Regarding to the challenge,based on super-Gaussian function,a complex-amplitude-computed holography for generating the“perfect flattop vortex beams”is theoretically proposed,the principle is experimentally proofed in a digital Fourier transform system based on a phase-only spatial light modulator,and the method to obtain the beam with a smooth vortex singularity in a finite-aperture system is mainly focused on.
作者
姜嘉琪
Carmelo Rosales-Guzmán
朱智涵
JIANG Jiaqi;Carmelo Rosales-Guzmán;ZHU Zhihan(Wang Da-heng Collaborative Innovation Center,Heilongjiang Key Laboratory of Quantum Control,Harbin University of Science and Technology,Harbin 150080,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2022年第1期136-141,共6页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金,62075050,11934013,61975047。
关键词
傅里叶光学
轨道角动量
涡旋光束
平顶光束
计算全息
Fourier optics
orbital angular momentum
vortex beams
flattop beams
computed hologram
