Recent Advances in MEMS-VCSELs for High Performance Structural and Functional SS-OCT Imaging

被引:14
作者
Jayaraman, V. [1 ]
John, D. D. [1 ]
Burgner, C. [1 ]
Robertson, M. E. [1 ]
Potsaid, B. [2 ]
Jiang, J. Y. [2 ]
Tsai, T. H. [3 ]
Choi, W. [3 ]
Lu, C. D. [3 ]
Heim, P. J. S. [2 ]
Fujimoto, J. G. [3 ]
Cableb, A. E. [2 ]
机构
[1] Praevium Res Inc, 5385 Hollister Ave 211 Bldg 8,Off 16, Santa Barbara, CA 93111 USA
[2] Thorlabs Inc, Newton, NJ 07860 USA
[3] MIT, Dept Elect & Comp Engn, Cambridge, MA 02139 USA
来源
OPTICAL COHERENCE TOMOGRAPHY AND COHERENCE DOMAIN OPTICAL METHODS IN BIOMEDICINE XVIII | 2014年 / 8934卷
基金
美国国家卫生研究院;
关键词
Optical coherence tomography; MEMS-VCSELs; Tunable lasers; Biomedical Imaging; SWEPT; DESIGN; LASERS;
D O I
10.1117/12.2041718
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Since the first demonstration of swept source optical coherence tomography (SS-OCT) imaging using widely tunable micro-electromechanical systems vertical cavity surface-emitting lasers (MEMS-VCSELs) in 2011, VCSEL-based SS-OCT has advanced in both device and system performance. These advances include extension of MEMS-VCSEL center wavelength to both 1060nm and 1300nm, improved tuning range and tuning speed, new SS-OCT imaging modes, and demonstration of the first electrically pumped devices. Optically pumped devices have demonstrated continuous single-mode tuning range of 150nm at 1300nm and 122nm at 1060nm, representing a fractional tuning range of 11.5%, which is nearly a factor of 3 greater than the best reported MEMS-VCSEL tuning ranges prior to 2011. These tuning ranges have also been achieved with wavelength modulation rates of >500kHz, enabling >1 MHz axial scan rates. In addition, recent electrically pumped devices have exhibited 48.5nm continuous tuning range around 1060nm with 890kHz axial scan rate, representing a factor of two increase in tuning over previously reported electrically pumped MEMS-VCSELs in this wavelength range. New imaging modes enabled by optically pumped devices at 1060nm and 1300nm include full eye length imaging, pulsatile Doppler blood flow imaging, high-speed endoscopic imaging, and hand-held wide-field retinal imaging.
引用
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页数:11
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