Axicons for improved lidar performance

Austin Jantzi; William Jemison; David Illig; Linda Mullen

doi:10.1117/12.2558690

22 April 2020 Axicons for improved lidar performance

Austin Jantzi, William Jemison, David Illig, Linda Mullen

Proceedings Volume 11420, Ocean Sensing and Monitoring XII; 114200A (2020) https://doi.org/10.1117/12.2558690
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

Axicon spatial coherence filtering is presented as a method to improve underwater optical ranging. In underwater environments, light detection and ranging (lidar) is often limited by scattering from particulate matter. Previous work suggests that scattered light and object-reflected light have different spatial phase distributions. This work exploits this difference in spatial phase, using an axicon to optically separate light with different degrees of spatial coherence. The performance of the lidar system with and without the axicon filter is compared. Axicon spatial coherence filtering demonstrates the ability to suppress multipath backscatter and forward scatter, leading to improvements in range accuracy

Conference Presentation

Citation Download Citation

Austin Jantzi, William Jemison, David Illig, and Linda Mullen "Axicons for improved lidar performance", Proc. SPIE 11420, Ocean Sensing and Monitoring XII, 114200A (22 April 2020); https://doi.org/10.1117/12.2558690

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