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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Computational ghost imaging with higher-order cosh-Gaussian modulated incoherent sources in atmospheric turbulence
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Computational ghost imaging with higher-order cosh-Gaussian modulated incoherent sources in atmospheric turbulence

机译：大气湍流中高阶Cosh-Gauss调制不相干源的计算重影成像

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摘要

We show that the resolution of the computational ghost imaging (CGI) system through atmospheric turbulence can be significantly improved by modulating a coherent source with high-order cosh-Gaussian functions. The analytical formula for the CGI system with a higher-order cosh-Gaussian source in turbulent atmosphere is derived and can be viewed as the original object convoluted a point-spread function (PSF). The imaging quality is mainly determined by the size of the PSF, which is closely related to the source parameters of the higher-order cosh-Gaussian beam, the turbulent strength and the propagation distance. Numerical examples are given to clearly see the effects of the above system parameters on the PSF and the quality of the CGI system. Compared with the widely used Gaussian source, it is found that the resolution of CGI can be obviously enhanced by properly adjusting the parameters of the higherorder cosh-Gaussian sources. Thus this kind of shaped source can be used to improve the imaging resolution and may be helpful to the CGI real applications. (C) 2015 Elsevier B.V. All rights reserved.
机译：我们表明，通过调制具有高阶cosh-Gaussian函数的相干源，可以显着提高通过大气湍流计算鬼影（CGI）系统的分辨率。推导了在湍流大气中具有高阶Cosh-Gaussian源的CGI系统的解析公式，可以将其视为原始对象绕开了点扩展函数（PSF）。成像质量主要取决于PSF的大小，而PSF的大小与高阶Cosh-Gaussian光束的源参数，湍流强度和传播距离密切相关。给出了数值示例，以清楚地看到上述系统参数对PSF和CGI系统质量的影响。与广泛使用的高斯源相比，发现通过适当调整高阶cosh-Gaussian源的参数可以明显提高CGI的分辨率。因此，这种成形光源可用于提高成像分辨率，并可能对CGI实际应用有所帮助。 （C）2015 Elsevier B.V.保留所有权利。

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