Lu Xiaosong, Li Jianhui, Yang Lu, Ren Jing, Sun Mingyang, Yang Anping, Yang Zhiyong, Jain Ravinder Kumar, Wang Pengfei
Opt Lett. 2020 May 1;45(9):2676-2679. doi: 10.1364/OL.392190.
Compact, mechanically robust, and cost-effective mid-infrared (MIR) light sources are key components in portable and field-deployable gas sensors. Capitalizing on an efficient energy transfer mechanism between and , we have demonstrated for the first time, to the best of our knowledge, that ultrabroadband 2.5-5.5 µm MIR emission can be achieved at room temperatures in chalcogenide (ChG) glasses that are pumped by a commercially available erbium-doped fiber amplifier emitting at 1.57 µm. These MIR-transparent ChG glass ceramics are embedded with / codoped ZnSe nanocrystals, and show sufficient MIR emission intensities and bandwidths to enable gas sensing for multiple target analytes such as butane and carbon dioxide. We also describe, to the best of our knowledge, the first observation of a unique "anomalous" increase in the MIR luminescence intensity as a function of temperature.
紧凑、机械坚固且经济高效的中红外（MIR）光源是便携式和现场可部署气体传感器的关键组件。利用[此处原文缺失部分内容]与[此处原文缺失部分内容]之间高效的能量转移机制，据我们所知，我们首次证明，在室温下，通过发射波长为1.57 µm的商用掺铒光纤放大器泵浦的硫族化物（ChG）玻璃中，可以实现2.5 - 5.5 µm的超宽带中红外发射。这些中红外透明的ChG玻璃陶瓷嵌入了[此处原文缺失部分内容]/共掺杂的ZnSe纳米晶体，并显示出足够的中红外发射强度和带宽，能够对多种目标分析物（如丁烷和二氧化碳）进行气体传感。据我们所知，我们还首次描述了中红外发光强度随温度的独特“异常”增加现象。
