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| Partially coherent Gaussian–Schell model pulse beam propagation in slant atmospheric turbulence | |
| 引用本文： | 李亚清,吴振森,王明军. Partially coherent Gaussian–Schell model pulse beam propagation in slant atmospheric turbulence[J]. 中国物理 B, 2014, 0(6): 295-303 |
| 作者姓名： | 李亚清 吴振森 王明军 |
| 基金项目： | supported by the National Natural Science Foundation of China(Grant Nos.61172031 and 61271110) |
| 摘 要： | Based on the extended Huygens-Fresnel principle, a two-frequency, two-point cross-spectral density function of partially coherent Gaussian-Schell model pulse （GSMP） beam propagation in slant atmospheric turbulence is derived. Using the Markov approximation method and on the assumption that （w1 - w2）/（w1 ＋ w2） ≤ 1, the theory obtained is valid for turbulence of any strength and can be applied to narrow-band signals. The expressions for average beam intensity, the beam size, and the two-frequency complex degree of coherence of a GSMP beam are obtained. The numerical results are presented, and the effects of the frequency, initial pulse width, initial beam radius, zenith angle, and outer scales on the complex degree of coherence are discussed. This study provides a better understanding of the second-order statistics of a GSMP beam propagating through atmospheric turbulence in the space-frequency domain. |
| 关 键 词： | 光束传播 大气湍流 脉冲宽度 部分相干 高斯 模型 谢尔 菲涅耳原理 |
Partially coherent Gaussian-Schell model pulse beam propagation in slant atmospheric turbulence |
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| Abstract: | atmospheric propagation, partial coherence, atmospheric turbulence |
| Keywords: | atmospheric propagation partial coherence atmospheric turbulence |
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