23 September 2017 Phase and amplitude correction in polygon tunable laser-based optical coherence tomography
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Abstract
Phase instability is a serious problem in swept-source optical coherence tomography (OCT) with polygon tunable lasers; however, these devices have additional issues. We found that polygon tunable lasers also have fluctuations in output power and sweep range: the former creates artifacts that may impair the recognition of sample information, and the latter reduces the interference signal utilization during phase correction. We demonstrate a method that uses the calibration signal to quantify these problems and improve system stability and image quality. The proposed amplitude correction and phase correction methods are used to eliminate vertical artifacts and improve the resolution of OCT flow and intensity images while reducing the phase error.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jinyu Fan, Pinghe Wang, Feng Gao, Zhehao Hu, Wen Kong, Haiwen Li, Guohua Shi, "Phase and amplitude correction in polygon tunable laser-based optical coherence tomography," Journal of Biomedical Optics 22(9), 096013 (23 September 2017). https://doi.org/10.1117/1.JBO.22.9.096013 Submission: Received 21 December 2016; Accepted 23 August 2017
Submission: Received 21 December 2016; Accepted 23 August 2017
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