中国激光, 2002, 29 (s1): 273, 网络出版: 2013-02-23
用张量方法研究部分相干光的传输特性
Analysis of the Propagation Properties of Partially Coherent Beams by Using Tensor Method
摘要
运用张量方法引入了描写一般部分相干非轴对称高斯-谢尔模(GSM)光束的4×4阶部分相干复曲率张量Μ-1导出了适用于部分相干光传输的张量ABCD定律,利用此定律研究分析了髙斯-谢尔模经过薄透镜的聚焦 特性。研究表明, 聚焦后光斑的大小以及聚焦点位置与部分相干光的横向相干宽度σ2g, 波前曲率等参数有关。部分相干非轴对称高斯-谢尔模光束的聚焦特性还跟扭曲因子密切相关。
Abstract
A new 4×4 complex curvature tensor Μ-1 is introduced to describe partially coherent anisotropic Gaussian-Schell model beams (GSM). The propagation law of Μ-1 is also derived which may be called partially coherent tensor ABCD law. The focusing properties of GSM beam focused by a thin lens using the derived tensor ABCD law of partially coherent are calculated and analyzed. The result shows that the focusing properties of partially coherent GSM beam are closely related to the coherence length and phase front curvature. For the case of partially coherent anisotropic GSM beam, its focusing properties are also related to the twist factor.
蔡阳健, 林强, 谢先闻. 用张量方法研究部分相干光的传输特性[J]. 中国激光, 2002, 29(s1): 273. CAI Yang-jian, LIN Qiang, Xie Xian-wen. Analysis of the Propagation Properties of Partially Coherent Beams by Using Tensor Method[J]. Chinese Journal of Lasers, 2002, 29(s1): 273.