Growth and lasing of single crystal YAG fibers with different Ho3+ concentrations
| Autor: | M. Soskind, Subhabrata Bera, Craig D. Nie, Eric G. Johnson, James A. Harrington, Yuan Li |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Analytical chemistry chemistry.chemical_element 02 engineering and technology 01 natural sciences Inorganic Chemistry Optics 0103 physical sciences Fiber Laser-heated pedestal growth Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy 010302 applied physics Dopant business.industry Organic Chemistry Slope efficiency Yttrium 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry 0210 nano-technology Holmium business Single crystal Lasing threshold |
| Zdroj: | Optical Materials. 75:44-48 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2017.09.048 |
| Popis: | A method to grow single crystal (SC) yttrium aluminum garnet (YAG) fibers with varied rare-earth ion dopant concentration has been proposed. Crystalline holmium aluminum garnet (HoAG), prepared via sol-gel process, was dip-coated on to previously grown SC YAG fibers. The HoAG coated SC YAG fiber preforms were re-grown to a smaller diameter using the laser heated pedestal growth (LHPG) technique. The final dopant concentration of the re-grown SC fiber was varied by changing the number of HoAG coatings on the preform. 120 μm diameter SC Ho:YAG fibers with four different dopant concentrations were grown. Lasing was demonstrated at 2.09 μm for these fibers. A maximum of 58.5% optical-to-optical slope efficiency was obtained. |
| Databáze: | OpenAIRE |
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