基于空间光调制器的可移动光镊的产生及其在粒子囚禁中的应用

doi:10.3969/j.issn.1000-5641.2025.03.008

华东师范大学学报（自然科学版） ›› 2025, Vol. 2025 ›› Issue (3): 61-71.doi: 10.3969/j.issn.1000-5641.2025.03.008

基于空间光调制器的可移动光镊的产生及其在粒子囚禁中的应用

孔晨莹, 周婧雯, 汤继鸿, 郭超修, 尹亚玲*()

华东师范大学物理与电子科学学院, 上海　200241

收稿日期:2024-02-22 出版日期:2025-05-25 发布日期:2025-05-28
通讯作者: 尹亚玲 E-mail:ylyin@phy.ecnu.edu.cn
基金资助:
国家自然科学基金(12174115)

Spatial light modulator-based movable optical tweezer generated for particle trapping applications

Chenying KONG, Jingwen ZHOU, Jihong TANG, Chaoxiu GUO, Yaling YIN*()

School of Physics and Electronic Science, East China Normal University, Shanghai　200241, China

Received:2024-02-22 Online:2025-05-25 Published:2025-05-28
Contact: Yaling YIN E-mail:ylyin@phy.ecnu.edu.cn

摘要/Abstract

摘要：

光学镊子为精确操控微观粒子提供了一种非接触、无损伤的有效方法, 对光学微操纵技术的应用和发展具有重要的意义. 提出并验证了一种采用空间光调制器产生一维可移动光学囚禁势(光镊)的方案, 并讨论了其在粒子囚禁方面的应用. 对加载到空间光调制器上的两种光束的相位全息图进行动态连续调谐, 可产生聚焦高斯光束和涡旋空心光束. 研究了这两种光束在自由空间的传播特性, 光束的光强最大值、光斑大小和焦距之间的关系; 计算了颗粒在聚焦高斯光镊和涡旋空心光镊中的光学势、梯度力和散射力, 并讨论了构建可调谐一维移动光镊的可行性. 该方案在微观粒子的激光囚禁和操控中具有重要的应用前景.

关键词: 光镊, 高斯光束, 涡旋空心光束, 空间光调制器, 粒子囚禁

Abstract:

Optical tweezers provide an effective non-contact and non-damaging method for precise manipulation of microscopic particles, which is of great significance in the development and application of optical micromanipulation technology. In this paper, a scheme is proposed for generating a one-dimensional movable optical potential trap(optical tweezers) using a spatial light modulator, thereby demonstrating it and discussing its application in particle trapping. The phase holograms of the two beams loaded on a space light modulator were dynamically tuned continuously to produce focused Gaussian and vortex hollow beams. The propagation characteristics of the two kinds of beams in free space, the relationship to the maximum intensity of the beam, size of the spot, and focal length were further studied. The optical potential, gradient force, and scattering force of particles in focused Gaussian and vortex hollow optical tweezers were calculated. The feasibility of constructing tunable one-dimensional moving optical tweezers is further discussed. This scheme has important application prospects in laser trapping and manipulation of microscopic particles.

Key words: optical tweezers, Gaussian beam, vortex hollow beam, spatial light modulator, particle trapping

中图分类号:

O439

孔晨莹, 周婧雯, 汤继鸿, 郭超修, 尹亚玲. 基于空间光调制器的可移动光镊的产生及其在粒子囚禁中的应用[J]. 华东师范大学学报（自然科学版）, 2025, 2025(3): 61-71.

Chenying KONG, Jingwen ZHOU, Jihong TANG, Chaoxiu GUO, Yaling YIN. Spatial light modulator-based movable optical tweezer generated for particle trapping applications[J]. J* E* C* N* U* N* S*, 2025, 2025(3): 61-71.

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基于空间光调制器的可移动光镊的产生及其在粒子囚禁中的应用

Spatial light modulator-based movable optical tweezer generated for particle trapping applications

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