16 March 2016 Cladding single crystal YAG fibers grown by laser heated pedestal growth
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Abstract
Rare-earth doped single-crystal (SC) Yttrium Aluminum Garnet (YAG) fibers are excellent candidates for high power lasers. These SC fiber optics combine the favorable low Stimulated Brillouin Scattering (SBS) gain coefficient and excellent thermal properties to make them an attractive alternative to glass fiber lasers and amplifiers. Various rare-earth doped SC fibers have been grown using the laser heated pedestal growth (LHPG) technique. Several cladding methods, including in-situ and post-growth cladding techniques, are discussed in this paper. A rod-in-tube approach has been used by to grow a fiber with an Erbium doped SC YAG fiber core inserted in a SC YAG tube. The result is a radial gradient in the distribution of rare-earth ions. Post cladding methods include sol-gel deposited polycrystalline.
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Subhabrata Bera, Craig D. Nie, James A. Harrington, Theresa Chick, Ayan Chakrabarty, Stephen Trembath-Reichert, James Chapman, Stephen C. Rand, "Cladding single crystal YAG fibers grown by laser heated pedestal growth", Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 97260C (16 March 2016); doi: 10.1117/12.2216254; https://doi.org/10.1117/12.2216254
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