• Acta Optica Sinica
  • Vol. 5, Issue 4, 319 (1985)
LIU HUIMIN and GAN FUXI
Author Affiliations
  • [in Chinese]
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    LIU HUIMIN, GAN FUXI. Time-resolved fluorescence spectra of titanium-contained fluorophosphate glass[J]. Acta Optica Sinica, 1985, 5(4): 319 Copy Citation Text show less

    Abstract

    The absorption, fluorescence and excitation spectra of titanium-contained fluoro-phosphate glass have been measured. The results show that Ti3+ ions in the glass are located at disordered octahedral sites. With UV 250~320nm excitation of the charge transfer band a visible 0.55μm luminescence has been observed. The band-width is 180nm. In the excitation spectrum the peak position is located at 290 nm. Furthermore, time-resolved fluorescence and relaxation spectra of Ti3+ ions in the glass have been measured at room temperature and 77 K, respectively. It is found that the fluorescent peak positions move from 510 nm to longer wavelength 610 nm at liquid nitrogen temperature and the spectra become diffused with the increase of delay time up to 30 fis, while a little change occurs in the spectra at room temperature. The fluorescence life-times of 5~12 at low temperature are dependent upon the emission wavelengths. On the contrary they are 13 μs and independent upon the emission wavelengths at room temperature. In addition, the condition and possibility of the emission of Ti3+ ions in inorganic glasses are discussed.