Laser-heated Pedestal Growth and Raman DTS for Harsh-environment Applications

Conference · Tue Nov 12 04:00:00 EST 2024

DOI:https://doi.org/10.2172/2476815· OSTI ID:2476815

Lander, Gary ^[1]; Karki, Dolendra ^[1]; Wuenschell, Jeffrey ^[2]; Buric, Michael ^[2]

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1. NETL Site Support Contractor, National Energy Technology Laboratory
2. NETL

Fibers composed of single crystal (SC) materials are mechanically, thermally, and chemically robust to harsh conditions, and thus attractive for sensing applications in harsh environments. However, SC fibers grown via the laser-heated pedestal growth (LHPG) technique do not intrinsically have a functional cladding layer. We investigate self-segregation of dopants in a crystal matrix within a SC fiber. Ti and Cr dopants within a sapphire matrix were grown via the LHPG method. Cross-sectional dopant concentrations were measured via electron-probe micro-analysis (EPMA). The cross-sectional constituent profiles and resulting transmissivities were characterized as a function of growth parameters.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy and Carbon Management (FECM); USDOE Office of Fossil Energy and Carbon Management (FECM), Office of Carbon Management (FE-20)
• OSTI ID: 2476815
• Country of Publication: United States
• Language: English