余弦平方高斯光束通过无光栏透镜的梯度力

郝中骐; 刘莉

余弦平方高斯光束通过无光栏透镜的梯度力

郝中骐^,,
刘莉

宜春学院物理科学与工程技术学院,江西宜春 336000

详细信息

通讯作者:
郝中骐（1978-），男，山西榆社人，硕士，讲师，主要从事激光传输与变换方面研究工作.

中图分类号: O439
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- 刊出日期: 2012-03-14

Gradient force pattern of cosine-squared Gaussian beams through lens without aperture

HAO Zhong-qi^,,
LIU Li

Faculty of Physics Science and Engineering Technology,Yichun University,Yichun 336000,China

摘要

摘要: 基于Collins公式推导了余弦平方高斯光束通过无光栏透镜光学系统聚焦后的光强分布及梯度力，采用数值模拟分析梯度力分布及光阱的数量、位置及尺度随光束参数、光束入射距离及系统菲涅耳数的变化。结果表明：光束相关参数b越大光阱的数量越多，光阱的位置随光束入射距离而改变，大小随系统菲涅耳数的增加而减小，但不影响其位置。
- 余弦平方高斯光束 /
- 无光栏透镜 /
- Collins公式 /
- 梯度力
Abstract: The intensity distribution and gradient force pattern of cosine-squared Gaussian beams focused by a thin lens without aperture were derived based on the Collins formula. Through the numerical simulation, the influence of the beams parameter, relative incident separation and beams Fresnel number on the distribution of gradient force pattern, the number, position and size of the optical traps were discussed. The results indicated that the bigger the beams parameter b, the more the optical traps; the position of optical trap changed with the beams relative incident separation, and the size decreased with the increase of Fresnel number of the system while the position stayed unchanged.
- cosine-squared Gaussian beams /
- thin lens without aperture /
- Collins formula /
- gradient force pattern

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参考文献(1)

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文章访问数: 3404
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余弦平方高斯光束通过无光栏透镜的梯度力

通讯作者:
郝中骐（1978-），男，山西榆社人，硕士，讲师，主要从事激光传输与变换方面研究工作.

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Gradient force pattern of cosine-squared Gaussian beams through lens without aperture

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余弦平方高斯光束通过无光栏透镜的梯度力

通讯作者: 郝中骐（1978-），男，山西榆社人，硕士，讲师，主要从事激光传输与变换方面研究工作.

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Gradient force pattern of cosine-squared Gaussian beams through lens without aperture

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通讯作者:
郝中骐（1978-），男，山西榆社人，硕士，讲师，主要从事激光传输与变换方面研究工作.