梯度折射率透镜式光学相干层析成像探头的数值分析。
Numerical analysis of gradient index lens-based optical coherence tomography imaging probes.
机构信息
University of Illinois, Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA.
出版信息
J Biomed Opt. 2010 Nov-Dec;15(6):066027. doi: 10.1117/1.3523374.
Abstract
We report the numerical analysis of gradient index (GRIN) lens-based optical coherence tomography imaging probes to derive optimal design parameters. Long and short working distance probes with a small focal spot are considered. In each model, the working distance and beam waist are characterized and compared for different values of length and refractive index of the probe components. We also explore the influence of the outer tubing and refractive index of the sample media. Numerical results show that the adjustment of the maximum beam diameter and focusing angle at the end of the GRIN lens surface is very important for determining the optical performance parameters of the probe.
摘要
我们报告了基于梯度折射率 (GRIN) 透镜的光学相干层析成像探头的数值分析，以得出最佳设计参数。考虑了长工作距离和短工作距离的探头，具有小的光斑。在每个模型中，针对探头组件的不同长度和折射率值，对工作距离和束腰进行了特征描述和比较。我们还探讨了外管和样品介质折射率的影响。数值结果表明，调整 GRIN 透镜表面末端的最大光束直径和聚焦角对于确定探头的光学性能参数非常重要。
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