Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Off-axis reference beam for full-field swept-source OCT and holoscopy   In numerous applications, Fourier-domain optical coherence tomography
(FD-OCT) suffers from a limited imaging depth due to signal roll-off, a limited
focal range, and autocorrelation noise. Here, we propose a parallel full-field
FD-OCT imaging method that uses a swept laser source and an area camera in
combination with an off-axis reference, which is incident on the camera at a
small angle. As in digital off-axis holography, this angle separates
autocorrelation signals and the complex conjugated mirror image from the actual
signal in Fourier space. We demonstrate that by reconstructing the signal term
only, this approach enables full-range imaging, i.e., it increases the imaging
depth by a factor of two, and removes autocorrelation artifacts. The previously
demonstrated techniques of inverse scattering and holoscopy can then
numerically extend the focal range without loss of lateral resolution or
imaging sensitivity. The resulting, significantly enhanced measurement depth is
demonstrated by imaging a porcine eye over its entire depth, including cornea,
lens, and retina. Finally, the feasibility of in vivo measurements is
demonstrated by imaging the living human retina.

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The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th