Gong Yongkang, Wang Zuobin, Li Kang, Uggalla Leshan, Huang Jungang, Copner Nigel, Zhou Yang, Qiao Dun, Zhu Jiuyuan
Opt Lett. 2017 Nov 1;42(21):4537-4540. doi: 10.1364/OL.42.004537.
Development of a novel, cost-effective, and highly efficient mid-infrared light source has been identified as a major scientific and technological goal within the area of optical gas sensing. We have proposed and investigated a mid-infrared metamaterial thermal emitter based on micro-structured chromium thin film. The results demonstrate that the proposed thermal light source supports broadband and wide angular absorption of both TE- and TM-polarized light, giving rise to broadband thermal radiation with averaged emissivity of ∼0.94 in a mid-infrared atmospheric window of 8-14 μm. The proposed microphotonic concept provides a promising alternative mid-infrared source and paves the way towards novel optical gas sensing platforms for many applications.
开发一种新型、经济高效且高效的中红外光源已被确定为光学气体传感领域的一项主要科技目标。我们提出并研究了一种基于微结构铬薄膜的中红外超材料热发射器。结果表明，所提出的热光源支持TE和TM偏振光的宽带和宽角度吸收，在8-14μm的中红外大气窗口中产生平均发射率约为0.94的宽带热辐射。所提出的微光子概念提供了一种有前景的替代中红外光源，并为许多应用的新型光学气体传感平台铺平了道路。
