Photosensitivity of fluoride glass planar waveguides doped with rare earth ions (Ce3+, Eu2+, Er3+)

Marc Douay; Wenxiang Xie; Pascal Bernage; Pierre Niay; Brigitte Boulard; Youping Gao; Charles Jacoboni; H. Poignant

doi:10.1117/12.264202

23 January 1997 Photosensitivity of fluoride glass planar waveguides doped with rare earth ions (Ce³⁺, Eu²⁺, Er³⁺)

Marc Douay, Wenxiang Xie, Pascal Bernage, Pierre Niay, Brigitte Boulard, Youping Gao, Charles Jacoboni, H. Poignant

Proceedings Volume 2998, Photosensitive Optical Materials and Devices; (1997) https://doi.org/10.1117/12.264202
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

Rare earth (Ce³⁺, Eu²⁺, Er³⁺) doped PZG (PbF₂, ZnF₂ GaF₃) glass thin films fabricated by vapor phase deposition on CaF₂ substrates have been shown to possess high photosensitivity. Efficient and permanent gratings have been written in the PZG glass by using a cw UV laser (244 nm). The kinetics of the grating growths were monitored by using a HeNe beam (633 nm) in course of grating photoinscription. The sample surfaces at the grating places were investigated through interferometric microscopy. The changes in refractive index modulation were estimated to be 6.8 multiplied by 10^-3 and 3.7 multiplied by 10^-3 in the Eu²⁺ and Ce³⁺ doped samples respectively. Stability of the gratings was investigated through 30 min isochronal thermal annealing experiment.

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Marc Douay, Wenxiang Xie, Pascal Bernage, Pierre Niay, Brigitte Boulard, Youping Gao, Charles Jacoboni, and H. Poignant "Photosensitivity of fluoride glass planar waveguides doped with rare earth ions (Ce³⁺, Eu²⁺, Er³⁺)", Proc. SPIE 2998, Photosensitive Optical Materials and Devices, (23 January 1997); https://doi.org/10.1117/12.264202

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