Metamaterial metal-based bolometers

被引：114

作者：

Niesler, F. B. P. ^{[1
,2
,3
]}

Gansel, J. K. ^{[1
,2
]}

Fischbach, S. ^{[1
,2
]}

Wegener, M. ^{[1
,2
,3
]}

机构：

[1] KIT, Inst Angew Phys, D-76131 Karlsruhe, Germany

[2] KIT, DFG Ctr Funct Nanostruct CFN, D-76131 Karlsruhe, Germany

[3] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 20期

关键词：

PERFECT ABSORBER;

D O I：

10.1063/1.4714741

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate metamaterial metal-based bolometers, which take advantage of resonant absorption in that a spectral and/or polarization filter can be built into the bolometer. Our proof-of-principle gold-nanostructure-based devices operate around 1.5 mu m wavelength and exhibit room-temperature time constants of about 134 mu s. The ultimate detectivity is limited by Johnson noise, enabling room-temperature detection of 1 nW light levels within 1 Hz bandwidth. Graded bolometer arrays might allow for integrated spectrometers with several octaves bandwidth without the need for gratings or prisms and for integrated polarization analysis without external polarization optics. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4714741]

引用

页数：3

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