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J Biomed Opt. 2010 Nov-Dec;15(6):066027. doi: 10.1117/1.3523374.

Numerical analysis of gradient index lens-based optical coherence tomography imaging probes.

Author information

1
University of Illinois, Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA. wgjung@illinois.edu

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.

PMID:
21198201
PMCID:
PMC3032234
DOI:
10.1117/1.3523374
[Indexed for MEDLINE]
Free PMC Article

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