Terahertz imaging with a direct detector based on superconducting tunnel junctions

Seiichiro Ariyoshi; Chiko Otani; Adrian Dobroiu; Y. Satou; Kodo Kawase; Hirohiko M. Shimizu; Tohru Taino; Hiroshi Matsuo

doi:10.1063/1.2204842

Abstract

We demonstrated terahertz imaging using a direct detector based on niobium superconducting tunnel junctions (STJs). The detector is composed of linearly distributed junctions placed on a superconducting microstrip line and is integrated on two wings of a log-periodic antenna. We succeeded nondestructive imaging for an integrated-circuit card and dry material using the detector around its sensitivity peak (∼0.66THz). The dynamic range was measured to be higher than 4×107 (76dB). Thus, the STJ detector is applicable to high-sensitivity and high-speed terahertz imaging for various nondestructive inspection applications.

Keywords

Terahertz radiationDetectorSuperconductivitySuperconducting tunnel junctionMicrostripOptoelectronicsSensitivity (control systems)NiobiumMaterials scienceOpticsAntenna (radio)PhysicsJosephson effectElectrical engineeringElectronic engineeringCondensed matter physicsPi Josephson junctionEngineering

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Publication Info

Year: 2006
Type: article
Volume: 88
Issue: 20
Citations: 96
Access: Closed

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APA Style

                            
                                
                                    Seiichiro Ariyoshi, 
                                
                                    Chiko Otani, 
                                
                                    Adrian Dobroiu
                                
                                et al.
                            
                            (2006). 
                            Terahertz imaging with a direct detector based on superconducting tunnel junctions. 
                            Applied Physics Letters
                            , 88
                            (20)
                            .
                            https://doi.org/10.1063/1.2204842
                        

Identifiers

DOI: 10.1063/1.2204842