会议论文详细信息
29th International Symposium on Superconductivity | |
Improving the spatial resolution of superconducting tunnel junction THz wave detectors using a modified LiNbO3 absorber | |
Sone, M.^1 ; Igarashi, N.^1 ; Naruse, M.^1 ; Myoren, H.^1 ; Sasaki, Y.^2 ; Otani, C.^2 ; Taino, T.^1 | |
Graduate School of Science and Engineering, Saitama University, 225 Shimo-Ohkubo, Sakura-ku, Saitama | |
338-8570, Japan^1 | |
RIKEN, 519-1399 Aramaki Aoba, Aoba-ku, Sendai, Miyagi | |
980-0845, Japan^2 | |
关键词: Dicing process; Diffusion characteristics; Phonon diffusion; Spatial resolution; Superconducting tunnel junction; THz photon; THz waves; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/871/1/012069/pdf DOI : 10.1088/1742-6596/871/1/012069 |
|
来源: IOP | |
【 摘 要 】
We proposed a superconducting tunnel junction (STJ) detector for terahertz (THz) waves with a modified substrate absorber. The absorber of each STJ was isolated by trenches in order to restrict the diffusion of phonons generated by THz waves, which are made with a dicing process. We evaluated the diffusion characteristics of phonons in the LiNbO3substrate by detecting THz photons. We found that the phonon diffusion length in a 500-μm-thick LiNbO3substrate was over 1 mm. No degradation of the current - voltage (I-V) characteristics of the STJ after performing the dicing process.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
Improving the spatial resolution of superconducting tunnel junction THz wave detectors using a modified LiNbO3 absorber | 774KB | download |