Enhanced absorption of metals over ultrabroad electromagnetic spectrum

A. Y. Vorobyev; A.N. Topkov; O. V. Gurin; V. A. Svich; Chunlei Guo

doi:10.1063/1.3227668

Abstract

Metals are usually highly reflective for electromagnetic waves, especially at far-infrared and terahertz frequencies. Using a femtosecond laser structuring technique, near-perfectly reflective metals are transformed to highly absorptive over an ultrabroad electromagnetic spectrum, ranging from ultraviolet to terahertz. Absorptance of the processed metal is directly measured in the terahertz region using a calorimetry technique, and the measurements show that absorptance of the processed metal is enhanced by more than thirty times over its intrinsic value.

Keywords

Terahertz radiationAbsorptanceElectromagnetic radiationTerahertz gapFemtosecondMaterials scienceElectromagnetic spectrumOpticsAbsorption (acoustics)OptoelectronicsFar infraredInfraredLaserFar-infrared laserReflectivityPhysicsTerahertz metamaterials

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Publication Info

Year: 2009
Type: article
Volume: 95
Issue: 12
Citations: 94
Access: Closed

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APA Style

                            
                                
                                    A. Y. Vorobyev, 
                                
                                    A.N. Topkov, 
                                
                                    O. V. Gurin
                                
                                et al.
                            
                            (2009). 
                            Enhanced absorption of metals over ultrabroad electromagnetic spectrum. 
                            Applied Physics Letters
                            , 95
                            (12)
                            .
                            https://doi.org/10.1063/1.3227668
                        

Identifiers

DOI: 10.1063/1.3227668