Light-efficient beamsplitter for Fourier-domain full-field optical coherence tomography

被引：4

作者：

Auksorius, Egidijus ^{[1
,2
]}

机构：

[1] PSL Res Univ, Inst Langevin, ESPCI ParisTech, CNRS UMR 7587, 1 Rue Jussieu, F-75005 Paris, France

[2] Polish Acad Sci, Inst Phys Chem, Kasprzaka 44-52, PL-01224 Warsaw, Poland

来源：

OPTICS LETTERS | 2020年 / 45卷 / 05期

基金：

欧盟地平线“2020”;

关键词：

BEAM;

D O I：

10.1364/OL.383823

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Any full-field optical coherence tomography (FF-OCT) system wastes almost 75% of light, including 50% of the OCT signal, because it uses a 50/50 beamsplitter (BS) in the standard implementation. Here, a design of a light-efficient BS is presented that loses almost no light when implemented in Fourier-domain FF-OCT. It is based on pupil engineering and a small highly asymmetric BS. The presented signal-to-noise ratio (SNR) analysis demonstrates almost four times improvement over the conventional design. In addition, it is shown that the light-efficient BS can be used to suppress specular reflections from a sample and, thus, further improve the SNR. (C) 2020 Optical Society of America

引用

页码：1240 / 1243

页数：4

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