在新选项卡中打开链接
  1. Copilot 答案
    Wikipedia
    https://en.wikipedia.org › wiki › Fourier_optics

    Fourier optics - Wikipedia

    • Fourier optics is the study of classical optics using Fourier transforms (FTs), in which the waveform being considered is regarded as made up of a combination, or superposition, of plane waves. It has some parallels to the Huygens–Fresnel principle, in which the wavefront is regarded as being made up of a combination of spherical wavefronts (also called p… 展开

    Propagation of light in homogeneous, source-free media

    Light can be described as a waveform propagating through a free space (vacuum) or a material medium (such as air or g… 展开

    The paraxial approximation

    A solution to the Helmholtz equation as the spatial part of a complex-valued Cartesian component of a single frequency wave is assumed to take the form: where is the wave vector, and and is the wave number. Next, use the … 展开

    The far field approximation

    The equation (2.1) above may be evaluated asymptotically in the far field (using the stationary phase method) to show that the field at a distant point is indeed due solely to the plane wave component with the wave vector which … 展开

    简单认识傅里叶光学 - 知乎 - 知乎专栏
    傅里叶光学 ，可以看作是通信理论中傅里叶变换等一系列数学思想以及系统理论与光学（主要是 衍射光学 ）相结合的产物。 真正发展这门学科的并不是傅里叶本人，而是一位“好男人”Joseph W. Goodm…
    知乎专栏 · https://zhuanlan.zhihu.com/p/217503…
    CC-BY-SA 许可证中的维基百科文本
    反馈