High peak power single-frequency MOPFA for lidar applications
| Autor: | Lombard, Laurent, Canat, Guillaume, Durécu, Anne, Dolfi-Bouteyre, Agnès, Valla, Matthieu, Augère, Béatrice, Goular, Didier, Besson, Claudine |
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| Přispěvatelé: | ONERA - The French Aerospace Lab [Palaiseau], ONERA-Université Paris Saclay (COmUE), André, Cécile |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | CLRC 18th Coherent Laser Radar CLRC 18th Coherent Laser Radar, Jun 2016, BOULDER, United States |
| Popis: | International audience; Long range coherent detection wind lidars have many applications in the fields of wind farms and aircraft safety. Fiber laser sources emitting around 1.5µm show key advantages such as versatility, modularity and robustness of alignments to vibrations. However, nonlinear effects such as Stimulated-Brillouin-Scattering limit achievable peak power because of strong fiber core confinement. Wind lidars based on fiber laser technologies thus operate in a regime with low energy per pulse (typically 10µJ-1mJ) and high pulse repetition frequency (typically 5-50kHz). We investigated various technologies to improve peak power in 1.5µm fiber lasers such as special large mode area (LMA) fiber designs or strain management. Integration of a high peak power source in ONERA LICORNE wind lidar enabled to achieve air speed profiles up to record ranges of 16km within 0.1s averaging time. |
| Databáze: | OpenAIRE |
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