Epitaxial Growth of Single Crystal YAG for Optical Devices
| Autor: | Syed N. Qadri, L. Brandon Shaw, Syed B. Qadri, Bradley S. Stadelman, Shyam S. Bayya, Jasbinder S. Sanghera, Woohong Kim, Joseph W. Kolis |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Dopant business.industry sesquioxides Doping Surfaces and Interfaces hydrothermal growth Cladding (fiber optics) Engineering (General). Civil engineering (General) Surfaces Coatings and Films fiber lasers Core (optical fiber) liquid phase epitaxial growth YAG Fiber laser Materials Chemistry Optoelectronics Fiber Laser-heated pedestal growth TA1-2040 business Single crystal |
| Zdroj: | Coatings, Vol 11, Iss 644, p 644 (2021) Coatings Volume 11 Issue 6 |
| ISSN: | 2079-6412 |
| Popis: | We report the latest progress on fabrication of rare earth doped single crystal yttrium aluminum garnet (YAG) core/undoped YAG cladded fibers. Rare-earth doped single crystal core fibers were grown with laser heated pedestal growth methods. In a second step, epitaxial methods were used to grow a single crystalline undoped YAG cladding onto the core fiber. Hydrothermal and liquid phase epitaxy methods utilize the core doped fiber as the seed. X-ray diffraction of cladding reveals an equilibrium (110) morphology. Energy-dispersive X-ray spectroscopy analysis shows there is minimal diffusion of rare-earth dopants into the cladding structure. The use of scandium doping is shown to substitute at the Al3+ site, thereby allowing an additional tunability of refractive index of core structure material besides conventional Y3+ site dopants. The use of these epitaxial growth methods enables material compatibility, tuning of refractive index, and conformal growth of cladding structures onto core fibers for optical devices. |
| Databáze: | OpenAIRE |
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