In order to develop a novel electric light source, the doped high-silica glass was studied on the preparation and spectroscopic properties. The porous glasses were made firstly and were then immersed in the solution containing Ce ion. Thereafter, the high-silica glasses containing Ce ion were prepared by sintering the porous preform. The spectroscopic properties were studied before and after heat-treatment in H2. The experimental results indicate that the suitable temperature schedules are the most important to prepare doped high-silica glass. The study of the spectra shows that Ce ion can be reduced to low valence state when it is heat-treated in H2. It can be used to adjust the UV cut-off wavelength of high-silica glass by changing the valence state of Ce ion.
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