Sensitivity of synthetic aperture laser optical feedback imaging

Details Sensitivity of synthetic aperture laser optical feedback imaging Sensitivity of synthetic aperture laser optical feedback imaging

2012-01-16

arxiv.org/abs/1201.3282v1

Physics

Optics

Scientific paper

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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