Evolution properties of a complex coherent square Gaussian-Schell-model beam in a uniaxial crystal orthogonal to the optical axis.

IF 1.4 3区 物理与天体物理 Q3 OPTICS
Jun Zhou, Huguang Li, Jianyang Zhou
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引用次数: 0

Abstract

The analytical formulas for spectral density, degree of coherence, and effective beam widths of complex coherent square Gaussian-Schell-model (GSM) beams in a uniaxial crystal orthogonal to the optical axis are derived. Based on these analytical formulas, the evolution properties are investigated by a set of numerical examples. It is demonstrated that the complex coherent square GSM beams spread at different rates in the directions parallel and orthogonal to the optical axis due to the anisotropic crystal, but the self-shift effect of the light field is almost unaffected by the fact that the uniaxial crystal is anisotropic. The effect of anisotropy of the uniaxial crystal on the effective width of the beam in the x direction and that in the y direction is completely opposite. The results provide a way for the modulation of the complex coherent square GSM beams and enrich the propagation theory of uniaxial crystal.

正交于光轴的单轴晶体中复相干方高斯-谢尔模型光束的演化特性。
导出了正交于光轴的单轴晶体中复相干方高斯-谢尔模型(GSM)光束的光谱密度、相干度和有效光束宽度的解析公式。基于这些解析公式,通过一组数值算例研究了其演化性质。结果表明,由于各向异性晶体的存在,复相干方形GSM光束在平行和正交于光轴的方向上以不同的速率传播,但光场的自移效应几乎不受单轴晶体各向异性的影响。单轴晶体的各向异性对x方向和y方向光束有效宽度的影响完全相反。研究结果为复相干方GSM光束的调制提供了一条途径,丰富了单轴晶体的传播理论。
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来源期刊
CiteScore
3.40
自引率
10.50%
发文量
417
审稿时长
3 months
期刊介绍: The Journal of the Optical Society of America A (JOSA A) is devoted to developments in any field of classical optics, image science, and vision. JOSA A includes original peer-reviewed papers on such topics as: * Atmospheric optics * Clinical vision * Coherence and Statistical Optics * Color * Diffraction and gratings * Image processing * Machine vision * Physiological optics * Polarization * Scattering * Signal processing * Thin films * Visual optics Also: j opt soc am a.
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