Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion
| Autor: | Anders Kragh Hansen, Katrin Paschke, Gaëlle Lucas-Leclin, Patrick Georges, Paul Crump, Muhammad Tahir Jamal, Philipp Albrodt, Gunnar Blume, Ole B. Jensen |
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| Přispěvatelé: | Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Danmarks Tekniske Universitet (DTU), Technical University of Denmark [Lyngby] (DTU), Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH), Forschungsverbund Berlin e.V. (FVB) (FVB), Institut d'Optique Théorique et Appliquée |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Maximum power principle Lithium niobate Physics::Optics 02 engineering and technology 01 natural sciences 7. Clean energy law.invention 010309 optics chemistry.chemical_compound Optics law 0103 physical sciences [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] business.industry Amplifier Energy conversion efficiency Second-harmonic generation 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics chemistry [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Laser beam quality 0210 nano-technology business Beam (structure) |
| Zdroj: | Optics Express Albrodt, P, Jamal, M T, Hansen, A K, Jensen, O B, Blume, G, Paschke, K, Crump, P, Georges, P & Lucas-Leclin, G 2019, ' Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion ', Optics Express, vol. 27, no. 2, pp. 928-937 . https://doi.org/10.1364/OE.27.000928 Optics Express, Optical Society of America-OSA Publishing, 2019, 27 (2), pp.928. ⟨10.1364/OE.27.000928⟩ |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/OE.27.000928 |
| Popis: | We report on a coherent beam combination of three high-brightness tapered amplifiers, which are seeded by a single-frequency laser at λ = 976 nm in a simple architecture with efficiently cooled emitters. The maximal combined power of 12.9 W is achieved at a combining efficiency of > 65%, which is limited by the amplifiers’ intrinsic beam quality. The coherent combination cleans up the spatial profile, as the central lobe’s power content increases by up to 86%. This high-brightness infrared beam is converted into the visible by second harmonic generation. This results in a high non-linear conversion efficiency of 4.5%/W and a maximum power over 2 W at 488 nm, which is limited by thermal effects in the periodically poled lithium niobate (PPLN). |
| Databáze: | OpenAIRE |
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