Passive coherent beam combining of quantum-cascade lasers with a Dammann grating
| Autor: | Mathieu Carras, Eric Lallier, Gaëlle Lucas-Leclin, Guillaume Bloom, Xavier Marcadet, Brigitte Loiseaux, Christian Larat, Mane-Si Laure Lee-Bouhours, Patrick Georges, Gaëlle Lehoucq, S. Bansropun |
|---|---|
| Přispěvatelé: | Thales Research and Technology [Palaiseau], THALES, Alcatel Thales 3-5 lab, 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), Laboratoire Charles Fabry de l'Institut d'Optique / Lasers, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Phase (waves) Binary number Physics::Optics Quantum cascade lasers 02 engineering and technology Grating beam combining 01 natural sciences 7. Clean energy law.invention 010309 optics Optics 140.3298 140.5965 050.1380 law 0103 physical sciences Blazed grating [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] business.industry mid-infrared Fresnel equations binary phase grating 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Cascade Optoelectronics Physics::Accelerator Physics M squared Laser beam quality 0210 nano-technology business Beam (structure) optical countermeasures |
| Zdroj: | SPIE Photonics West '12 / OPTO-Novel in-plane semiconductor lasers XI SPIE Photonics West '12 / OPTO-Novel in-plane semiconductor lasers XI, Jan 2012, San Francisco, United States. pp.8277-65 Optics Letters Optics Letters, Optical Society of America-OSA Publishing, 2011, 36 (19), pp.3810-3812 |
| ISSN: | 0146-9592 1539-4794 |
| Popis: | An external cavity with a binary phase grating has been developed to achieve the coherent beam addition of five quantum-cascade lasers emitting at 4.65 μm. The combining of these five emitters is achieved by a binary phase grating or Dammann grating able to separate an incident beam into five beams of equal intensities with a 75% efficiency. A CW output power of ~ 0.65 W corresponding to a combining efficiency of 70% with a good beam quality is obtained. More results concerning output power, combining, efficiency stability and beam quality and spectrum are exposed. |
| Databáze: | OpenAIRE |
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