Reconfigurable time-stretched swept laser source with up to 100 MHz sweep rate,100 nm bandwidth,and 100 mm OCT imaging range

作     者：DONGMEI HUANG FENG LI CHAO SHANG ZIHAO CHENG P.K.A.WAI 

作者机构：Photonics Research CentreDepartment of Electronic and Information EngineeringThe Hong Kong Polytechnic UniversityHong Kong SARChina The Hong Kong Polytechnic University Shenzhen Research InstituteShenzhen 518057China Photonics Research CentreDepartment of Electrical EngineeringThe Hong Kong Polytechnic UniversityHong Kong SARChina Key Laboratory of Luminescence and Optical InformationMinistry of EducationSchool of ScienceBeijing Jiaotong UniversityBeijing 100044China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2020年第8卷第8期

页      面：1360-1367页

核心收录：

学科分类：0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Key Research and Development Program of China(2019YFB1803900) Science,Technology and Innovation Commission of Shenzhen Municipality(SGDX2019081623060558) Research Grants Council,University Grants Committee of Hong Kong SAR(PolyU152241/18E,PolyU152471/16E) The Hong Kong Polytechnic University(1-BBAJ,1-ZVGB) 

主　　题：laser modulator source 

摘      要：The sweep rate,sweep range,and coherence length of swept sources,respectively,determine the acquisition rate,axial resolution,and imaging range of optical coherence tomography(OCT).In this paper,we demonstrate a reconfigurable high-speed and broadband swept laser by time stretching of a flat spectrum femtosecond pulse train with over 100 nm bandwidth and a repetition rate of 100 *** incorporating an optical modulator and utilizing appropriate dispersive modules,the reconfiguration of the swept source is demonstrated with sweep rates of 25 and 2.5 *** 2.5 MHz swept source enables an imaging range of110 mm with 6 dB sensitivity rolloff in OCT,which is the longest imaging range ever reported for megahertz OCT.