Influence of grain size and Nd 3+ concentration on the stimulated emission of LiLa 1-x Nd x P 4 O 12 crystal powders
| Autor: | Sara García-Revilla, Wieslaw Strek, Joaquín Fernández, I. Iparraguirre, Lukasz Marciniak, Rolindes Balda, Macarena Barredo-Zuriarrain, Jon Azkargorta |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Eusko Jaurlaritza |
| Rok vydání: | 2017 |
| Předmět: |
Analytical chemistry
chemistry.chemical_element 02 engineering and technology 01 natural sciences Neodymium Lithium-neodymium tetraphosphate law.invention 010309 optics Inorganic Chemistry Crystal Optics Magazine law 0103 physical sciences Random laser Rare-earth Stimulated emission Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy business.industry Chemistry Organic Chemistry Slope efficiency 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Grain size Electronic Optical and Magnetic Materials 0210 nano-technology business Stoichiometry |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2016.07.016 |
| Popis: | The influence of grain size and neodymium concentration on the threshold and absolute slope efficiency of the stimulated emission of LiLaNdPO (x = 0.1, 0.5, and 1) crystalline powders has been investigated by using a pulsed Ti-sapphire pumping. The absolute slope efficiencies are similar for the studied samples with x = 0.5 and 1 whereas the lowest threshold pump energy corresponds to the stoichiometric sample with an average grain size of around 20 μm. The grain size also affects the emitting surface of the random laser due to the reduction of the difussive length as grain size decreases. The experimental results show the importance of seeking the optimal grain size for a given material. This work was supported by the Spanish Government MEC under Project No. MAT2013-48246-C2-2-P and Basque Country GovernmentS-PC13UN-017 and IT-943-16. M. Barredo-Zuriarrain acknowledges an FPI grant from the Spanish Government. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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