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Te Cluster Engineering for Tunable Optical Response
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DOI：10.1002/adfm.202315943.png)
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The construction of active materials with controllable optical response facilitates the development of advanced photonic devices. However, the achievement of robust active materials with wide wavelength tunable and broadband emission remains a great challenge, mainly due to the fixed energy levels of conventional active dopants and limited inhomogeneous broadening in common hosts. Here, the study proposes that the cluster in the mesoscopic scale of approximate to 1 nm may break this bottleneck issue and demonstrate a strategy for the management of photon emission by engineering the cluster evolution. The amorphous glass as the host to tailor the characteristic configuration of Te clusters from 1 to 2 nm by control of the topological structures in glass is employed. Impressively, it presents a distinct optical response totally different from the conventional active centers and this enables to construct of active photonic glass with continuously tunable emission from 888 to 1064 nm. More importantly, Te cluster-activated photonic glass fibers are fabricated and the broadband on-off gain is successfully achieved. Furthermore, benefiting from the unique tunable emission, novel near-infrared devices are constructed and their application in imaging is demonstrated. The approach of cluster engineering mediated tunable optical response is believed to bring new opportunities for developing advanced photonic devices. The strategy for the management of photon emission by engineering the cluster evolution is proposed. Tuning the characteristic configuration of Te clusters from 1 to 2 nm can be realized by controlling the topological structures of glasses. The resultant materials exhibit continuously tunable luminescence with a central wavelength from 888 to 1064 nm. image
Keyword:
cluster engineering
optical active materials
Te-doped
tunable luminescence
期刊
IF:
19
论文数:
3.5W
被引数:
32.1W
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