Rear-side resonator architecture for the passive coherent combining of high-brightness laser diodes
| Autor: | Götz Erbert, Patrick Georges, Gunnar Blume, Gaëlle Lucas-Leclin, Ioana Doyen-Moldovan, Guillaume Schimmel, Sylvie Janicot, Marc Hanna, Paul Crump, J. Decker |
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| Přispěvatelé: | Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Ferdinand-Braun-Institut für Höchtstfrequenztechnik (FBH), Forschungsverbund Berlin e.V. (FVB) (FVB), European Project: 314719,EC:FP7:ICT,FP7-2012-NMP-ICT-FoF,BRIDLE(2012), 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) |
| Rok vydání: | 2016 |
| Předmět: |
Brightness
Materials science Physics::Optics 02 engineering and technology 01 natural sciences 7. Clean energy Semiconductor laser theory law.invention 010309 optics Resonator Optics law 0103 physical sciences Diode [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] business.industry Amplifier Energy conversion efficiency 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Physics::Accelerator Physics Optoelectronics 0210 nano-technology business Beam (structure) |
| Zdroj: | Optics Letters Optics Letters, 2016, 41 (5), pp.950-953. ⟨10.1364/OL.41.000950⟩ Optics Letters, Optical Society of America-OSA Publishing, 2016, 41 (5), pp.950-953. ⟨10.1364/OL.41.000950⟩ |
| ISSN: | 1539-4794 0146-9592 |
| DOI: | 10.1364/ol.41.000950 |
| Popis: | International audience; We describe a new coherent beam combining architecture based on passive phase-locking of emitters in an extended cavity on their rear facet, and their coherent combination on the front facet. This rear-side technique provides strong optical feedback for phase-locking while maintaining a high electrical-to-optical efficiency. Two high-brightness high-power tapered laser diodes are coherently combined using a Michelson-based cavity – the combining efficiency is above 82% and results in an output power of 6.7 W in a nearly diffraction-limited beam with an M²4σ ≤ 1.2. A semi-active automatic adjustment of the current enhances the long-term stability of the combination, while the short-term stability is passively ensured by the extended cavity. This new laser configuration exhibits the simplicity of passive self-organizing architectures, while providing a power conversion efficiency of 27% that is comparable to master-oscillator power amplifier architectures. |
| Databáze: | OpenAIRE |
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