Abstract
Quantum dot-doped glasses have been the hotspot for their excellent electronic and optical properties. Owing to its tunable and broadband near-infrared (NIR) emission by controlling the size and distribution of QDs, QD-doped glasses and fibers are potentially applied in photoelectric devices. In this review, we mainly introduce the preparation, tunable emission, and multi-wavelength optical amplification of QD-doped glasses. Due to their excellent optical performances, the fabrication of QD-doped glass fibers is also presented, containing the successful fabrication of QD-doped glass fibers with tunable NIR emission. Furthermore, the achievements and existing problems about QD-doped glasses and fibers are also proposed with several prospects. These QD-doped glasses and fibers show promising applications as the gain medium of NIR broadband fiber amplifiers and tunable fiber lasers.
Highlights
Quantum dots (QDs) with excellent electronic and optical properties have received significant development in the last decade
Our studies demonstrated that utilizing ZnS + PbO instead of PbS as the precursor of QDs can effectively inhibit sulfur volatilization during glass melting, leading to the uniform and controllable growth of PbS QDs in glass matrix
The fluorescence peak positions can be controlled by the size and distribution of the QDs (Liu et al, 2009)
Summary
Quantum dots (QDs) with excellent electronic and optical properties have received significant development in the last decade. We successfully obtained the optical amplification at both 1330 and 1550 nm simultaneously in single PbS QDs-doped glass (as shown in Figure 17) by tuning the QDs’ size, distribution, and PL properties (Guoping et al, 2014).
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