Superbroadband near-infrared emission and energy transfer in Pr 3+-Er3+ codoped fluorotellurite glasses
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 12205-12211 |
Journal / Publication | Optics Express |
Volume | 20 |
Issue number | 11 |
Publication status | Published - 21 May 2012 |
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Abstract
We report the first demonstration of superbroadband emission extending from 1.30 to 1.68 μm in praseodymium(Pr3+)-erbium(Er3+) codoped fluorotellurite glasses under 488 nm excitation. This superbroad near-infrared emission is contributed by the Pr3+: 1D 2→1G4 and Er3+: 4I13/2→4I15/2 transitions which lead to emissions located at 1.48 and 1.53 μm, respectively. The quenching of the Pr3+ emission resulted from the cross relaxation [ 1D2, 3H4]→[1G 4, 3F3,4] was effectively compensated by the codoping of Er3+. The results suggest that, other than the heavy-metal and transition-metal elements of active bismuth (Bi), nickel (Ni), chromium (Cr), etc., Pr3+-Er3+ codoped system is a promising alternative for the broadband near-infrared emission covering the expanded low-loss window. © 2012 Optical Society of America.
Citation Format(s)
Superbroadband near-infrared emission and energy transfer in Pr 3+-Er3+ codoped fluorotellurite glasses. / Zhou, Bo; Tao, Lili; Tsang, Yuen H. et al.
In: Optics Express, Vol. 20, No. 11, 21.05.2012, p. 12205-12211.
In: Optics Express, Vol. 20, No. 11, 21.05.2012, p. 12205-12211.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review