AIT Austrian Institute of Technology, Nano Systems, 1220 Vienna, Austria.
Opt Lett. 2010 Nov 15;35(22):3766-8. doi: 10.1364/OL.35.003766.
The spectral responsivity and the dynamic behavior of microbolometers with an integrated absorbing metamaterial are investigated. Wavelength tailoring and tuning in different microbolometers are achieved by varying the lateral extension of the absorber elements. Maximum sensitivity is tuned between 2.9 and 7.7 μm, with peak absorptions reaching up to 88%. The presence of a continuous metallic shielding layer affects heat conduction and leads to faster thermal response times.
研究了集成吸收超材料的微测辐射热计的光谱响应和动态特性。通过改变吸收元件的横向延伸，实现了不同微测辐射热计的波长调整和调谐。最大灵敏度在 2.9 和 7.7 μm 之间调节，峰值吸收率高达 88%。连续的金属屏蔽层的存在会影响热传导，从而导致更快的热响应时间。
