15 December 2000 Stimulated Brillouin scattering using short probe pulses: an unsuspected transient response with advantageous consequences in distributed sensing at high spatial resolution
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Proceedings Volume 4087, Applications of Photonic Technology 4; (2000) https://doi.org/10.1117/12.406362
Event: 2000 International Conference on Application of Photonic Technology (ICAPT 2000), 2000, Quebec City, Canada
Abstract
We perform numerical simulations on a model describing a Brillouin based temperature and strain sensor, testing its response when probed with relatively short pulses. Experimental results were recently published that showed a broadening of the Brillouin loss curve when the probe pulse duration is reduced, followed by a sudden and rather surprising reduction of the linewidth when the pulse duration gets shorter than the acoustic relaxation time. Our study reveals the processes responsible for this behavior. We give a clear physical insight into the problem, allowing us to define of the best experimental conditions required to take advantage ofthis effect.
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V. Lecoeuche, David J. Webb, Christopher N. Pannell, David A. Jackson, "Stimulated Brillouin scattering using short probe pulses: an unsuspected transient response with advantageous consequences in distributed sensing at high spatial resolution", Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406362; https://doi.org/10.1117/12.406362
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