Enhancement Of The Depth Range Up To 13.8 Mm With Filtered External K-Sampling-Clock In An Ss-Oct System Using A Reflective Fabry-Perot Tunable Laser
OPTICAL COHERENCE TOMOGRAPHY AND COHERENCE DOMAIN OPTICAL METHODS IN BIOMEDICINE XVII(2013)
Abstract
The purpose of this work is to develop a method to generate external k-clock sampling signals, which provides enhanced depth ranges up to 13.8 mm with commercial reflective Fabry-Perot tunable laser type SS light sources. The strategy to enhance the depth range is to purify the k-sampling clock using electrical filters. We found two depth ranges and one optical delay length, where enhanced depth ranges can be attained. We observed PSFs and OCT images at three selected depth ranges of 6.7, 11.5 and 13.8 mm using newly developed external k-sampling-clock generator. OCT imaging of entire anterior segment of a human eye are demonstrated with depth ranges 11.5 and 13.8 mm.
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Key words
Optical coherence tomography,OCT,swept source OCT,SS-OCT,k-clock
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