Abstract
We perform numerical simulations on a model describing a Brillouin-based temperature and strain sensor, testing its response when it is probed with relatively short pulses. Experimental results were recently published [e.g., Opt. Lett. 24, 510 (1999)] 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 the best experimental conditions required for one to take the advantage of this effect.
Original language | English |
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Pages (from-to) | 156-158 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 25 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Feb 2000 |
Bibliographical note
© 2000 Optical Society of AmericaKeywords
- Brillouin-based temperature
- strain sensor
- short pulses
- linewidth
- pulse duration
- acoustic relaxation time