About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Solid-state Optical Materials and Luminescence Properties
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Presentation Title |
Melt Processing of a Co-extruded LiCa2Mg2V3O12 Garnet onto a YAG Single Crystal for IR Laser Applications |
Author(s) |
John Drazin, Hyunjun Kim, Kathryn Doyle, Andrew Schlup, Cynthia Bowers, Randall Hay, Kent Averett |
On-Site Speaker (Planned) |
John Drazin |
Abstract Scope |
YAG single crystals are being manufactured with sub-100 micron diameters (core fiber) for future IR high power generation applications. At these narrow diameters, the multimodal beam extends past the core fiber diameter which requires an optical cladding to maintain beam quality and power density in the laser system. Current YAG core fibers are coated with ceramic glasses, but these materials possess low thermal conductivities (~1W/m*K) which limits core fiber heat dissipation. Adding a crystallized ceramic would improve the thermal conductivity, but many viable options could leach out dopants from the core fiber during sintering. Therefore, in this work, a novel low melting temperature (1115C) LiCa2Mg2V3O12 garnet was synthesized and applied onto a single crystal 150um diameter YAG fiber in a water based paste and subsequently melted onto the core fiber. Thermal properties of the cladding material were measured and the cladding microstructure was observed using SEM and TEM. |