应用激光, 2018, 38 (5): 859, 网络出版: 2018-12-18  

具有自动捕获能力的双光纤光阱芯片设计与分析

Design and Analysis of Dual-fiber Optical Trap Chip with Self-trapped Capability
作者单位
1 火箭军驻长沙地区军事代表室, 湖南 长沙 410073
2 国防科技大学前沿交叉学科学院, 湖南 长沙 410073
摘要
双光纤光阱利用两相向传输的光纤捕获微粒, 将微粒发射到光阱区域实现捕获是光纤光阱技术中的基本问题。提出一种利用光力实现自动捕获的双光纤光阱芯片, 以实现通光即捕获微粒的功能。通过几何光学模型对光阱芯片中不同物理量进行了分析比较, 选定了能够满足自动捕获要求的芯片参数, 如捕获室尺寸、光束对准精度及束腰半径等。理论与实验结果表明, 在选取最佳化参数的情况下, 芯片能够实现对微粒的自动稳定捕获。该光阱芯片作为光阱技术的一种便捷的工具, 可促进相关技术在生物医学领域提供更广泛的应用。
Abstract
The dual-fiber optical trap uses counter-propagating fibers to trap particles. It is a fundamental problem in fiber optical trap technology to capture the particles emitted into the optical trap region. A dual-fiber optical trap chip that uses optical force to achieve self-trapped is proposed to achieve the function of passing light is trapping particles. The geometrical optical model is presented to analyze and compare different physical quantities in the optical trap chip, chip parameters that meet the self-trapped requirements are selected, such as trap room size, beam alignment accuracy and beam waist radius. Theoretical and experimental results show that the chip can achieve stable self-trapped of particles in the case of selecting optimal parameters. As a convenient tool for optical trap technology, the optical trap chip can promote the wider application of related technologies in the biomedical field.

陈明辉, 徐奇, 熊威, 韩翔, 肖光宗. 具有自动捕获能力的双光纤光阱芯片设计与分析[J]. 应用激光, 2018, 38(5): 859. Chen Minghui, Xu Qi, Xiong Wei, Han Xiang, Xiao Guangzong. Design and Analysis of Dual-fiber Optical Trap Chip with Self-trapped Capability[J]. APPLIED LASER, 2018, 38(5): 859.

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