Mid IR hollow core fiber gas laser emitting at 4.6 μm
| Autor: | Benoit Debord, Frédéric Gérôme, Farzin Beygi Azar Aghbolagh, Vasudevan Nampoothiri, Wolfgang Rudolph, Fetah Benabid, Luca Vincetti |
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| Přispěvatelé: | The University of New Mexico [Albuquerque], Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Optical fiber
Materials science Gas laser Fiber Optics Photonic Crystal fibers Hollow Core Fibers Lasers FOS: Physical sciences Physics::Optics 02 engineering and technology 01 natural sciences Fiber Optics law.invention 010309 optics Optics law Fiber laser 0103 physical sciences Photonic Crystal fibers Hollow Core Fibers business.industry Lasers Slope efficiency 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Core (optical fiber) [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Atomic physics 0210 nano-technology business Lasing threshold Photonic-crystal fiber Optics (physics.optics) Physics - Optics |
| Zdroj: | Optics Letters Optics Letters, Optical Society of America-OSA Publishing, 2019, 44 (2), pp.383-386. ⟨10.1364/OL.44.000383⟩ |
| ISSN: | 0146-9592 1539-4794 |
| DOI: | 10.1364/OL.44.000383⟩ |
| Popis: | International audience; Emission at 4.6 μm was observed from an N 2 O filled hollow core fiber laser. 8-ns pump pulses at 1.517 μm excited a vibrational overtone resulting in lasing on an R and P branch fundamental transition from the upper pump state. At optimum gas pressure of 80 Torr, photon conversion efficiency of 9% and slope efficiency of 3% were observed from a mirrorless laser. The laser threshold occurred at absorbed pump energy of 150 nJ in a 45-cm long fiber with 85 μm core diameter. The observed dependence of the laser output on gas pressure was shown to be a result of line broadening and relaxation rates. |
| Databáze: | OpenAIRE |
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