Broadband Absorbers for a Terahertz Calorimeter

被引：0
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作者：
Iida, Hitoshi [1 ]
Kinoshita, Moto [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan
来源：
2017 42ND INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2017年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Characteristics of an absorber used for power sensors is crucial for accurate terahertz (THz) power measurements. We have developed a highly sensitive THz calorimeter using a neutral-density optical filter glass as an absorber. However, the measurement accuracy deteriorated in the frequency range below 1 THz due to the reduction of absorption. In this study, broadband THz absorbers fabricated using magnetically loaded epoxy and polyurethane foam sheet were designed and evaluated for improving the measurement uncertainty of the calorimeter.
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