| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Solid-state Optical Materials and Luminescence Properties
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| Presentation Title |
Fabrication of Polycrystalline YAG Cladding on Single Crystal YAG Fibers via Co-Extrusion |
| Author(s) |
Hyunjun Kim, Randall Hay, Kent Averett, Benjamin Gray, Alan Martinez, Brian Sirn, Randall Corns, Robert Turner, Daniel Gibson, Robert Nicol, Shyam Bayya, Jas Sanghera , Rick Kim |
| On-Site Speaker (Planned) |
Hyunjun Kim |
| Abstract Scope |
LHPG (Laser Heated Pedestal Growth) method has been used to grow high optical quality single crystal YAG fibers for laser applications. There have been attempts to fabricate cladding on the single crystal YAG fibers using dip coating, sol-gel coating, and liquid phase epitaxy (LPE). LPE showed most promising results among them. However, the cladding fabricated with LPE contains contaminations from flux and it requires large Pt crucible for long fiber. We employed co-extrusion method to put green cladding on the single crystal YAG fibers and it formed a polycrystalline cladding on the single crystal YAG fiber after densification. Since the polycrystalline cladding is made from powder, its volume shrinks during densification. In addition, single crystal core grows into the cladding before densification such that pores are trapped in grown single crystal area. In this presentation, fabrication method of polycrystalline YAG cladding on single crystal YAG fiber will be discussed. |