| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
Growth Optimization of Single Crystal Fibers from Polycrystalline Source Rods Using Laser Heated Pedestal Methods |
| Author(s) |
Dolendra Karki, Edward Clover Hoffman, Paul R. Ohodnicki |
| On-Site Speaker (Planned) |
Dolendra Karki |
| Abstract Scope |
Because of their higher melting point than silica fibers, single crystal (SC) fibers offer sensing at higher temperature environment (~20000C). Laser heated pedestal growth (LHPG) utilizes high power (~15 Watt) CO2 laser to melt the tip of the SC source rod to grow such fibers from the melt. Since it is a crucible-free growth process, it offers purest of material composition along with the capability of growing smaller core-diameter fibers and controlled atomic composition. To our knowledge, mostly the single crystalline source-rods of same material are being used to feed the material for fiber growth. Here, we present the growth optimization to address challenges during SC fibers growth from polycrystalline source-rods of alumina, YAG and Nd:YAG, popular materials for high temperature sensing to fiber-laser applications. This approach would reduce the cost of SC fibers manufacturing as polycrystalline feed stocks are cheaper alternatives than the single crystalline ones. |