Miniature swept source for point of care Optical Frequency Domain Imaging
Miniature swept source for point of care Optical Frequency Domain Imaging
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DOI：
10.1364/oe.17.003619
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发表时间：
2009-03-02
期刊：
影响因子：
3.8
通讯作者：
Tearney, Guillermo J.
中科院分区：
文献类型：
--
作者：
Goldberg, Brian D.;Nezam, S. M. Reza Motaghian;Tearney, Guillermo J.
床旁（POC）医疗技术需要便携式、小型、坚固耐用的仪器来实现实际应用。在其当前实施例中，光频域成像（OFDI）系统采用大形状因子波长扫描激光器，使得它们在POC环境中不切实际。在这里，我们描述的第一步，通过演示一个小型化的扫频波长源的POC对外直接投资系统。该激光器是基于一个可调谐的光学滤波器，使用反射光栅和微型共振扫描镜。该激光器实现了以1340 nm为中心的75 nm带宽，0.24 nm瞬时线宽，15.3 kHz重复率，12 mW峰值输出功率，以及当利用前向和后向扫描时30.4 kHz A线速率。整个激光系统大约是一副扑克牌的大小，可以在电池电源下工作至少一个小时。(C)2009年美国光学学会
Point of care (POC) medical technologies require portable, small, robust instrumentation for practical implementation. In their current embodiment, optical frequency domain imaging (OFDI) systems employ large form-factor wavelength-swept lasers, making them impractical in the POC environment. Here, we describe a first step toward a POC OFDI system by demonstrating a miniaturized swept-wavelength source. The laser is based on a tunable optical filter using a reflection grating and a miniature resonant scanning mirror. The laser achieves 75 nm of bandwidth centered at 1340 nm, a 0.24 nm instantaneous line width, a 15.3 kHz repetition rate with 12 mW peak output power, and a 30.4 kHz A-line rate when utilizing forward and backward sweeps. The entire laser system is approximately the size of a deck of cards and can operate on battery power for at least one hour. (C) 2009 Optical Society of America