Lasing of surface-polished polycrystalline Ho: YAG (yttrium aluminum garnet) fiber
| Autor: | Kathleen Shugart, Dean P. Brown, David E. Zelmon, Hyun Jun Kim, Kristin A. Keller, Triplicane A. Parthasarathy, HeeDong Lee, Geoff E. Fair, Augustine Urbas, Benjamin G. Griffin, K. L. Averett, Sean A. McDaniel, Gary Cook, Randall G. Corns, Randall S. Hay, Ali H Kadhim, Nicholas G. Usechak, Santeri A Potticary, Frank Kenneth Hopkins |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Slope efficiency 02 engineering and technology 021001 nanoscience & nanotechnology Cladding (fiber optics) 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Optics visual_art Fiber laser 0103 physical sciences visual_art.visual_art_medium Surface roughness Grain boundary Ceramic Crystallite Composite material 0210 nano-technology business Lasing threshold |
| Zdroj: | Optics express. 25(6) |
| ISSN: | 1094-4087 |
| Popis: | A polycrystalline 1.5% Ho: YAG fiber with a diameter of 31 µm was prepared. Surface roughness from grain boundary grooving was reduced by polishing, which decreased the fiber scattering coefficient from 76 msup-1/supto 35 msup-1/sup. Lasing tests were done on this fiber with a SF57 Schott glass cladding. Lasing was confirmed by spectrum narrowing with threshold pump power lower than 500 mW and a slope efficiency of 7%. To our knowledge, this is the first lasing demonstration from a small diameter polycrystalline ceramic fiber. |
| Databáze: | OpenAIRE |
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