Modified shifted angular spectrum method for numerical propagation at reduced spatial sampling rates.
نویسنده
چکیده
The shifted angular spectrum method allows a reduction of the number of samples required for numerical off-axis propagation of scalar wave fields. In this work, a modification of the shifted angular spectrum method is presented. It allows a further reduction of the spatial sampling rate for certain wave fields. We calculate the benefit of this method for spherical waves. Additionally, a working implementation is presented showing the example of a spherical wave propagating through a circular aperture.
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ورودعنوان ژورنال:
- Optics express
دوره 22 21 شماره
صفحات -
تاریخ انتشار 2014