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Ce 3+ or Eu 2+ doped PZG (PbF 2 , ZnF 2 , GaF 3 ) glass thin films fabricated by vapor phase deposition on CaF 2 substrates have been shown to possess high photosensitivity. As an illustration, strong permanent gratings have been written in the PZG glass by using a continuous wave UV laser (λ = 244 nm). The kinetics of the grating growths...
Permanent photoinduced high index changes are reported for the first time to our knowledge in terbium doped alumino-silicate optical fibres exposed to pulsed UV laser light. The fibres were made photosensitive using the room temperature high pressure hydrogen loading technique. The dependence of photosensitivity on both terbium concentration and pump wavelength has been established. Both UV and...
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