کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1539150 | 996630 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Phase aberration compensation of digital holographic microscopy based on least squares surface fitting Phase aberration compensation of digital holographic microscopy based on least squares surface fitting](/preview/png/1539150.png)
Digital holographic microscopy allows the numerical reconstruction of the complex wavefront of samples, especially biological samples such as living cells. In digital holographic microscopy, a microscope objective is introduced to improve the transverse resolution of the sample; however a phase aberration in the object wavefront is also brought along, which will affect the phase distribution of the reconstructed image. We propose here a numerical method to compensate for the phase aberration of thin transparent objects with a single hologram. The least squares surface fitting with points number less than the matrix of the original hologram is performed on the unwrapped phase distribution to remove the unwanted wavefront curvature. The proposed method is demonstrated with the samples of the cicada wings and epidermal cells of garlic, and the experimental results are consistent with that of the double exposure method.
Journal: Optics Communications - Volume 282, Issue 19, 1 October 2009, Pages 3873–3877