期刊
OPTICS EXPRESS
卷 19, 期 15, 页码 14568-14584出版社
Optica Publishing Group
DOI: 10.1364/OE.19.014568
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资金
- Austrian Science Fund (FWF) [P19624-B02]
- European Union [201880]
- Austrian Science Fund (FWF) [P19624] Funding Source: Austrian Science Fund (FWF)
We present a high speed polarization sensitive spectral domain optical coherence tomography system based on polarization maintaining fibers and two high speed CMOS line scan cameras capable of retinal imaging with up to 128 k A-lines/s. This high imaging speed strongly reduces motion artifacts and therefore averaging of several B-scans is possible, which strongly reduces speckle noise and improves image quality. We present several methods for averaging retardation and optic axis orientation, the best one providing a 5 fold noise reduction. Furthermore, a novel scheme of calculating images of degree of polarization uniformity is presented. We quantitatively compare the noise reduction depending on the number of averaged frames and discuss the limits of frame numbers that can usefully be averaged. (C) 2011 Optical Society of America
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