FTIR multispectral imaging of P/Al-doped silica glass preforms prepared by MCVD in combination with the high temperature evaporation of AlCl3

For high power fiber lasers, codoping with Al, P or both is necessary to prevent rare earth (RE) clustering in the silica network of the laser active core material. Here, we present a complementary infrared (IR) based multispectral method combined with elemental analysis data on core/cladding to des...

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Bibliographic Details
Published in:Optical materials express 2022-01, Vol.12 (1), p.184
Main Authors: Lindner, F, Aichele, C, Kriltz, A, Scheffel, A, Bartelt, H, Wondraczek, K
Format: Article
Language:English
Subjects:
Aluminum chloride
Chemical analysis
Chemical vapor deposition
Clustering
Fiber lasers
High temperature
Infrared analysis
NMR
Nuclear magnetic resonance
Preforms
Silica glass
Silicon dioxide
Vapor phases
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Summary:For high power fiber lasers, codoping with Al, P or both is necessary to prevent rare earth (RE) clustering in the silica network of the laser active core material. Here, we present a complementary infrared (IR) based multispectral method combined with elemental analysis data on core/cladding to describe the structure of the doped core material as fabricated by chemical vapor deposition with gas phase doping of Al and P. The resulting 2D image and its corresponding 3D visualization of the data enable an alternative and convenient way to characterize the main species of the dopants aside from NMR measurements.
ISSN:2159-3930
DOI:10.1364/OME.444146