Towards model-based adaptive optics optical coherence tomography

被引：6
|
作者：
Verstraete, Hans R. G. W. [1 ]
Cense, Barry [2 ]
Bilderbeek, Rolf [1 ]
Verhaegen, Michel [1 ]
Kalkman, Jeroen [3 ]
机构：
[1] Delft Univ Technol, Delft Ctr Syst & Control, NL-2628 DC Delft, Netherlands
[2] Utsunomiya Univ, CORE, Utsunomiya, Tochigi 3208540, Japan
[3] Delft Univ Technol, Dept Imaging Phys, Fac Sci Appl, NL-2628 DC Delft, Netherlands
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 26期
关键词：
HIGH-SPEED; ULTRAHIGH-RESOLUTION; SCATTERING MEDIA; MICROSCOPY; BACKSCATTERING; TISSUE; EYES;
D O I：
10.1364/OE.22.032406
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The transfer function for optical wavefront aberrations in single-mode fiber based optical coherence tomography is determined. The loss in measured OCT signal due to optical wavefront aberrations is quantified using Fresnel propagation and the calculation of overlap integrals. A distinction is made between a model for a mirror and a scattering medium model. The model predictions are validated with measurements on a mirror and a scattering medium obtained with an adaptive optics optical coherence tomography setup. Furthermore, a one-step defocus correction, based on a single A-scan measurement, is derived from the model and verified. Finally, the pseudo-convex structure of the optical coherence tomography transfer function is validated with the convergence of a hill climbing algorithm. The implications of this model for wavefront sensorless aberration correction are discussed. (c) 2014 Optical Society of America
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页码：32406 / 32418
页数：13
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