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Superbroadband NIR Photoluminescence in {\rm Nd}^{3+}/{\rm Tm}^{3+}/{\rm Er}^{3+} Codoped Fluorotellurite Glasses

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5 Author(s)
Bo Zhou ; Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China ; Lili Tao ; Wei Jin ; Tsang, Y.H.
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We report the superbroadband photoluminescence extending from 1.3 to 1.7 μm in Neodymium(Nd3+)/Thulium(Tm3+)/Erbium(Er3+) codoped fluorotellurite glasses under 793 nm excitation. This superbroadband luminescence is contributed by the Nd3+:4F3/24I13/2, Tm3+:3H43F4, and Er3+:4I13/24I15/2 transitions that lead to broadband emissions located at 1.34, 1.47, and 1.53 μm, respectively. Broadband emission spectrum is also obtained in the ion-exchanged planar waveguide fabricated on Nd3+/Tm3+/Er3+ codoped fluorotellurite glass. The results indicate that other than active Bismuth (Bi), Chromium (Cr), Nickel (Ni), and other chemical elements, Nd3+/Tm3+/Er3+ codoping is a promising alternative for the broadband luminescence sources covering the expanded low-loss window.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 11 )