Forward-viewing resonant fiber-optic scanning endoscope of appropriate scanning speed for 3D OCT imaging

被引：76

作者：

Huo, Li ^{[1
]}

Xi, Jiefeng ^{[1
]}

Wu, Yicong ^{[1
]}

Li, Xingde ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Biomed Engn, Baltimore, MD 21205 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 14期

基金：

美国国家科学基金会; 美国国家卫生研究院;

关键词：

OPTICAL COHERENCE TOMOGRAPHY; MIRROR;

D O I：

10.1364/OE.18.014375

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A forward-viewing resonant fiber-optic endoscope of a scanning speed appropriate for a high-speed Fourier-domain optical coherence tomography (FD-OCT) system was developed to enable real-time, three-dimensional endoscopic OCT imaging. A new method was explored to conveniently tune the scanning frequency of a resonant fiber-optic scanner, by properly selecting the fiber-optic cantilever length, partially changing the mechanical property of the cantilever, and adding a weight to the cantilever tip. Systematic analyses indicated the resonant scanning frequency can be tuned over two orders of magnitude spanning from similar to 10Hz to similar to kHz. Such a flexible scanning frequency range makes it possible to set an appropriate scanning speed of the endoscope to match the different A-scan rates of a variety of FD-OCT systems. A 2.4-mm diameter, 62.5-Hz scanning endoscope appropriate to work with a 40-kHz swept-source OCT (SS-OCT) system was developed and demonstrated for 3D OCT imaging of biological tissues. (C) 2010 Optical Society of America

引用

页码：14375 / 14384

页数：10

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