The effects of Nd2O3 concentration in the laser emission of TeO2-ZnO glasses
| Autor: | Maria José Valenzuela Bell, D.J.L. Doualan, Richard Moncorgé, Patrice Camy, Virgílio de Carvalho dos Anjos, Luciana R. P. Kassab, L. M. Moreira, C.A.R. Ramos |
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| Přispěvatelé: | Universidade Federal de Juiz de Fora, Universidade Estadual Paulista (Unesp), Universite de Caen |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Analytical chemistry Laser chemistry.chemical_element 02 engineering and technology Output coupler 01 natural sciences Neodymium law.invention Inorganic Chemistry Tellurite law 0103 physical sciences Stimulated emission Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy 010302 applied physics Glasses Organic Chemistry Far-infrared laser Slope efficiency 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry Optical cavity Quantum efficiency Atomic physics 0210 nano-technology |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2016.05.024 |
| Popis: | Made available in DSpace on 2018-12-11T16:42:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-08-01 The present work reports the modification introduced by different Nd2O3 concentration on optical properties and the laser operation of Nd3+ doped (TeO2-ZnO) bulk tellurite glass. The spectroscopic data are analyzed within the Judd Ofelt formalism framework and the results are compared to the fluorescence lifetime and emission measurements to derive values for the quantum efficiency and the stimulated emission cross section of the considered 4F3/2 → 4I11/2 infrared laser transition around 1062.5 nm. Continuous-wave laser action is achieved with this bulk tellurite glass by pumping the sample inside a standard plan-concave mirror laser cavity with different output couplers. It is possible to observe coherent emission only for the lower concentration (0.5%(wt.) of Nd2 O3). Also laser action could only be observed for this sample with threshold pump power of 73 mW associated with a laser slope efficiency of 8% for an output coupler transmission of 4% indicating that TeO2-ZnO are potential materials for laser action. The results presented in this work together with those previously reported with higher concentration (1.0% (wt) of Nd2O3) determine the adequate Nd2O3 concentration for laser action and guide the correct experimental procedure for TeO2-ZnO glasses preparation. Laboratório de Espectroscopia de Materiais Departamento de Física Universidade Federal de Juiz de Fora Faculdade de Tecnologia de São Paulo Laboratório de Tecnologia em Materiais Fotônicos e Optoeletrônicos CEETEPS UNESP Centre de Recherche sur les Ions les Matériaux et la Photonique (CIMAP) UMR CNRS-CEA-Ensicaen Universite de Caen, 6 Boulevard Maréchal Juin Faculdade de Tecnologia de São Paulo Laboratório de Tecnologia em Materiais Fotônicos e Optoeletrônicos CEETEPS UNESP |
| Databáze: | OpenAIRE |
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