Structural Analysis Of Molten Materials By A Remote Fiber Optic Raman Sensor


This study presents a novel in situ high-temperature fiber optic Raman probe that enables the study of the physical properties and structure of molten samples at temperatures up to 1400°C. To demonstrate the functionality of the hightemperature fiber optic Raman probe, different composition mold fluxes were evaluated in this report. The Raman spectra at flux molten temperature were successfully collected and analyzed. A deconvolution algorithm was employed to identify peaks in the spectra associated with the molecular structure of the components in each sample. The experimental results demonstrate that the composition-dependent Raman signal shift can be detected at high temperatures, indicating that molten materials analysis using a high-temperature Raman system shows significant promise. This flexible and reliable high-temperature Raman measurement method has great potential for various applications, such as materials development, composition and structure monitoring during high-temperature processing, chemical identification, and process monitoring in industrial production.


Materials Science and Engineering

Second Department

Electrical and Computer Engineering


U.S. Department of Energy, Grant DE-EE0009119

Keywords and Phrases

composite material; Fiber optic sensor; high-temperature Raman spectroscopy; in situ Raman; mold flux; molten materials; Raman spectroscopy; real time measurement

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)

1996-756X; 0277-786X

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2023 Society of Photo-optical Instrumentation Engineers, All rights reserved.

Publication Date

01 Jan 2023