Laboratory demonstration of Fresnel telescope imaging ladar

Enwen Dai; Liren Liu; Jianfeng Sun; Yapeng Wu; Yu Zhou; Aimin Yan; Yanan Zhi

doi:10.1117/12.892446

13 September 2011 Laboratory demonstration of Fresnel telescope imaging ladar

Enwen Dai, Liren Liu, Jianfeng Sun, Yapeng Wu, Yu Zhou, Aimin Yan, Yanan Zhi

Proceedings Volume 8165, Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems; 816510 (2011) https://doi.org/10.1117/12.892446
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

In this paper, we present a laboratory demonstration of Fresnel telescope imaging ladar system for imaging the faraway objects with high resolution. Two concentric and coaxial quadratic wavefront with orthogonal polarization are used as scanning beams to illuminate the target. The scattered light from the target is heterodyne detected by a 90 degree 2×4 optical hybrid with two balanced receivers. The target image can be reconstructed by digital processing of the output signals of the balanced receivers. Point targets 4.3m away are reconstructed with high resolution in experiments.

Citation Download Citation

Enwen Dai, Liren Liu, Jianfeng Sun, Yapeng Wu, Yu Zhou, Aimin Yan, and Yanan Zhi "Laboratory demonstration of Fresnel telescope imaging ladar", Proc. SPIE 8165, Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems, 816510 (13 September 2011); https://doi.org/10.1117/12.892446

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