Coupling external cavity mid-IR quantum cascade lasers with low loss hollow metallic/dielectric waveguides
| Autor: | Vincenzo Spagnolo, A. Tredicucci, Gaetano Scamarcio, Pietro Patimisco, James A. Harrington, M. S. Vitiello, Carlos M. Bledt |
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| Přispěvatelé: | Patimisco, P., Spagnolo, V., Vitiello, M. S., Tredicucci, Alessandro, Scamarcio, G., Bledt, C. M., Harrington, J. A. |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Quantum optics
Coupling Materials science Physics and Astronomy (miscellaneous) business.industry General Engineering General Physics and Astronomy Dielectric engineering.material Laser law.invention chemistry.chemical_compound Optics chemistry Coating Cascade law Quantum Cascade Lasers engineering Polystyrene Hollow Fiber business Waveguide |
| Zdroj: | Applied physics. B, Lasers and optics info:cnr-pdr/source/autori:Patimisco, P.; Spagnolo, V.; Vitiello, M. S.; Tredicucci, A.; Scamarcio, G.; Bledt, C. M.; Harrington, J. A./titolo:Coupling external cavity mid-IR quantum cascade lasers with low loss hollow metallic%2Fdielectric waveguides/doi:10.1007%2Fs00340-012-4891-2/rivista:Applied physics. B, Lasers and optics (Print)/anno:2012/pagina_da:255/pagina_a:260/intervallo_pagine:255–260/volume:108 |
| DOI: | 10.1007/s00340-012-4891-2 |
| Popis: | We report on the optical coupling between hollow core waveguides and external cavity mid-IR quantum cascade lasers (QCLs). Waveguides with 1000 mu m bore size and lengths ranging from 2 to 14 cm, with metallic (Ag)/dielectric (AgI or polystyrene) circular cross-section internal coatings, have been employed. Our results show that the QCL mode is perfectly matched to the hybrid HE11 waveguide mode, demonstrating that the internal dielectric coating thickness is effective to suppress the higher losses TE-like modes. Optical losses down to 0.44 dB/m at 5.27 mu m were measured in Ag/polystyrene-coated waveguide with an almost unitary coupling efficiency. |
| Databáze: | OpenAIRE |
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