DEVELOPMENT OF HIGH-SPEED SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY SYSTEM AT 1320 nm  

作　　者：TONG WU ZHIHUA DING MINGHUI CHEN LEI XU GUOHUA SHI YUDONG ZHANG 

机构地区：[1]State Key Laboratory of Modern Optical Instrumentation Zhejiang University,Hangzhou Zhejiang 310027,China

出　　处：《Journal of Innovative Optical Health Sciences》2009年第1期117-122,共6页创新光学健康科学杂志（英文）

基　　金：supported by the National High Technology Research and Development Program of China(2006AA02Z4E0,2008AA02Z422);Natural Science Foundation of China(60878057,60478040).

摘　　要：A swept-source optical coherence tomography(SSOCT)system based on a high-speed scanning laser source at center wavelength of 1320 nm and scanning rate of 20 kHz is developed.The axial resolution is enhanced to 8.3μm by reshaping the spectrum in frequency domain using a window function and a wave number calibration method based on a Mach-Zender Interferometer(MZI)integrated in the SSOCT system.The imaging speed and depth range are 0.04 s per frame and 3.9 mm,respectively.The peak sensitivity of the SSOCT system is calibrated to be 112 dB.With the developed SSOCT system,optical coherence tomography(OCT)images of human finger tissue are obtained which enable us to view the sweat duct(SD),stratum corneum(SC)and epidermis(ED),demonstrating the feasibility of the SSOCT system for in vivo biomedical imaging.

关 键 词：Medical optics and biotechnology optical coherence tomography swept-source 

分 类 号：TN2[电子电信—物理电子学]