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arXiv 1201.3282physics.optics
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合成孔径laser光反馈成像的灵敏度

Sensitivity of synthetic aperture laser optical feedback imaging

Wilfried Glastre, Eric Lacot, Olivier Jacquin, Olivier Hugon, Hugues Guillet De Chatellus

摘要:

在本文中,我们比较了两种成像配置都基于激光光学反馈成像(LOFI)的灵敏度。第一种是直接成像,它使用传统的光学聚焦在目标上,第二种是由合成孔径(SA)激光,它使用数字聚焦。我们表明,SA配置允许获得良好的分辨率与高的工作距离,SA图像的缺点是,它有一个更差的光度平衡相比,传统的显微镜。LOFI的重要灵敏度部分弥补了这一缺陷。SA的另一个兴趣依赖于在单个x-y扫描中获得3D信息的能力。

英文摘要:

In this paper we compare the sensitivity of two imaging configurations both based on Laser Optical Feedback Imaging (LOFI). The first one is direct imaging, which uses conventional optical focalisation on target and the second one is made by Synthetic Aperture (SA) Laser, which uses numerical focalisation. We show that SA configuration allows to obtain good resolutions with high working distance and that the drawback of SA imagery is that it has a worse photometric balance in comparison to conventional microscope. This drawback is partially compensated by the important sensitivity of LOFI. Another interest of SA relies on the capacity of getting a 3D information in a single x-y scan.

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