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29 January 2007 Range finding with chaotic laser train generated from laser diode with optical feedback
Anbang Wang, Yuncai Wang
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Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 627970 (2007) https://doi.org/10.1117/12.725838
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China
Abstract
Range finding with continuous-wave chaotic laser train generated from laser diode with optical feedback is investigated theoretically. Chaotic laser is split into probe beam flighting to target and reference beam, and then, the distance of target can be calculated from the flight time obtained by correlating the time-delayed probe beam with the reference one. Effects of noise and waveform error on correlation performances for different chaotic states are investigated to study the system tolerance of environmental noise. Simultaneously, the effects of chaotic state characterized by the largest Lyapunov exponent and correlation dimension on correlation performances are demonstrated theoretically to select satisfying chaotic laser used as probe light. Simulated results indicate that ideal chaotic laser train should have high dimension and have smooth spectrum with broad bandwidth for ranging with high resolution. For the simulated system, ranging resolution within 1.5cm range independent of target location can be achieved using the chaotic lasers generated in middle of the chaos-generated regime of feedback level.
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Anbang Wang and Yuncai Wang "Range finding with chaotic laser train generated from laser diode with optical feedback", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627970 (29 January 2007); https://doi.org/10.1117/12.725838
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KEYWORDS
Semiconductor lasers
Laser optics
Laser beam diagnostics
Beam splitters
Continuous wave operation
Signal to noise ratio
Optical simulations
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