Fabrication of Active Fluoroaluminosilicate Fibers for High-Power Fiber Lasers
An all-vapor phase modified chemical vapor deposition (MCVD) process has been proposed for the fabrication of active-fiber preforms with a fluorine-rich F–Yb2O3–GeO2–Al2O3–SiO2 glass core. The composition of the glass has been shown to differ significantly from that of the vapor–gas mixture because of the formation of GeF4, AlF3, and YbF3, which are volatile at typical MCVD temperatures. We have identified F–Yb2O3–GeO2–Al2O3–SiO2 glass deposition conditions that ensure uniform distributions of the dopants along the length of the preform.
Keywordsaluminosilicate glass refractive index fluorination of glass
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- 5.Kirchhof, J., Unger, S., and Knappe, B., Interaction of germanium and fluorine in the preparation of optical waveguides, Optical Fiber Communication Conf. Technical Digest, 1994, vol. 4, paper WK11.Google Scholar
- 7.Belov, A.V., Gur’yanov, A.N., Gusovskii, D.D., Devyatykh, G.G., Dianov, E.M., Ignat’ev, S.V., Kurkov, A.S., Miroshnichenko, S.I., Neustruev, V.B., and Prokhorov, A.M., Single-mode optical fibers based on high-purity silica glass with the lowest possible optical loss, Vysokochist. Veshchestva, 1988, no. 3, pp. 189–193.Google Scholar
- 9.Schuster, K., Grimm, S., Kalide, A., Dellith, J., Leich, M., Schwuchow, M., Langner, A., Schötz, G., and Bartelt, H., Evolution of fluorine doping following the REPUSIL process for the adjustment of optical properties of silica materials, Opt. Mater. Express, 2015, vol. 5, no. 4, pp. 887–897.CrossRefGoogle Scholar
- 10.Kirchhof, J., Unger, S., Kobelke, J., Schuster, K., Mörl, K., Jetschke, S., and Schwuchow, A., Materials and technologies for microstructured high power laser fibers, Proc. SPIE, 2005, vol. 5951, paper 595107. doi 10.1117/12.622667Google Scholar