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doi:10.3850/978-981-08-7615-9_FI03
Three-Dimensional and En-Face Optical Coherence Tomography based on a Fourier Domain Mode Locking Laser for Dermatology Study
Meng-Tsan Tsai1, Hao-Li Liu2, Feng-Yu Chang2, Ting-Cha Chang2 and Chih-Hsun Yang3
1Department of Electrical Engineering, Chang Gung University, Graduate Institute of Medical Mechatronics, Chang Gung University 259 Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan,Taiwan,333, R.O.C.
2Department of Electrical Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan,Taiwan,333, R.O.C.
3Department of Dermatology, Chang Gung Memorial Hospital, No. 5, Fusing St., Kwei-Shan Tao-Yuan, Taiwan, 333, R.O.C.
ABSTRACT
In this paper, a swept-source optical coherence tomography (SS-OCT) system with a Fourier domain mode locking (FDML) laser is employed for Dermatology study. The FDML laser provides output power of > 20mW, and an output spectrum of 65nm in bandwidth centered at 1310nm, enabling imaging with axial resolution of less than 12um.Compared with the conventional frequency-swept light source, the FDML laser can achieve an ultrahigh scan rate as high as 240 kHz. The proposed ultrahigh-speed SS-OCT system provides three dimensional (3D) images with reduced motion artifacts. In addition, the en-face images can be extracted from 3D OCT dataset, facilitating the examination of the imaging specimen.
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