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光谱域光学相干断层扫描中光束的非机械转向

Non-mechanical steering of the optical beam in spectral-domain optical coherence tomography.

作者信息

Urrego Daniel F, Machado Gerard J, Torres Juan P

机构信息

ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, 08860, Barcelona, Spain.

Department of Physics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK.

出版信息

Sci Rep. 2024 Jun 27;14(1):14860. doi: 10.1038/s41598-024-65125-x.

Abstract

We demonstrate in a proof-of-concept experiment spectral-domain optical coherence tomography where steering of the optical beam that probes the sample in a transverse scan does not make use of any mechanical element. Steering is done with the help of a phase-only spatial light modulator, that introduces a spatially-dependent phase between the two orthogonal polarization components of an optical beam, and some optical elements that control the polarization of light. We demonstrate that making use of the non-mechanical beam steering system considered here, we can reproduce the main traits of imaging with standard OCT that makes use of mechanical-assisted optical beam steering.

摘要

我们在一个概念验证实验中展示了光谱域光学相干断层扫描技术,其中在横向扫描中探测样品的光束转向不使用任何机械元件。转向借助仅相位空间光调制器完成,该调制器在光束的两个正交偏振分量之间引入空间相关相位,以及一些控制光偏振的光学元件。我们证明,利用这里所考虑的非机械光束转向系统,我们可以重现使用机械辅助光束转向的标准光学相干断层扫描成像的主要特征。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/499a/11211445/e3cdf3ccfeb3/41598_2024_65125_Fig1_HTML.jpg

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