Dy3+ doped GaGeSbSe fiber long-wave infrared emission
Résumé
We report on the mid-wave infrared (MWIR) and long-wave infrared (LWIR) emissions of a 1000 ppm Dy 3+ doped Ga 5 Ge 20 Sb 10 Se 65 chalcogenide fiber. Following a shortwave infrared (SWIR) optical pumping at 0.92, 1.12 and 1.32 µm using commercial laser diodes, LWIR luminescence around 7.3 µm (6 H 7/2 → 6 H 9/2 transition) was recorded for the first time to the best of our knowledge along with MWIR emissions around 4.3 µm and 5.4 µm with a Dy 3+ doped Ga 5 Ge 20 Sb 10 Se 65 fiber. Frequency dependent spectroscopic investigation clearly shows that this LWIR luminescence originates from the 6 H 7/2 manifold. Spectroscopic properties of this Dy 3+ doped material and the comparison with its equivalent sulfide Dy 3+ :Ga 5 Ge 20 Sb 10 S 65 glass are presented.
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