中国物理B ›› 1998, Vol. 7 ›› Issue (11): 810-816.doi: 10.1088/1004-423X/7/11/002

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ROOM TEMPERATURE LIGHT-THERMO-DETECTOR MADE OF HIGH-Tc SUPERCONDUCTOR

张鹏翔1, 李国桢1, 张燕1, 文小明2, H. U. Habermeier3   

  1. (1)Department of Material Science and Engineering, Yunnan Polytechnic University, Kunming 650051, China; (2)Department of Physics, Yunnan University, Kunming 650091 China; (3)Max-Planck Institute für Festk$\ddot{o}$rperforschung, Stuttgart, Germany
  • 收稿日期:1997-11-21 修回日期:1998-05-13 出版日期:1998-11-20 发布日期:1998-11-20

ROOM TEMPERATURE LIGHT-THERMO-DETECTOR MADE OF HIGH-Tc SUPERCONDUCTOR

Zhang Peng-xiang (张鹏翔)a, Li Guo-zhen (李国桢)a, Zhang Yan (张燕)a, Wen Xiao-ming (文小明)b, H. U. Habermeierc   

  1. a Department of Material Science and Engineering, Yunnan Polytechnic University, Kunming 650051, China; b Department of Physics, Yunnan University, Kunming 650091 China; c Max-Planck Institute für Festk$\ddot{o}$rperforschung, Stuttgart, Germany
  • Received:1997-11-21 Revised:1998-05-13 Online:1998-11-20 Published:1998-11-20

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摘要： Based on the anisotropic Seebeck tensor coefficients, a light-thermo-radiation detector made of high-Tc superconductor (YBa2Cu3O7-δ) was fabricated, which can function at room temperature. The induced voltaic signals at various modulation frequencies for radiation from He-Ne laser and from a 500 K black body were measured. The noise ratio for detecting He-Ne laser radiation and the D* for black body were evaluated. Compared with bolometer made of high-Tc superconductor which functions at liquid nitrogen, and with pyroelectric detector, it was found that the advantages of this new device are that the device can work at room temperature with very low noise and very fast response. Although having a lower D* value than that of bolometer for the present device construction, we point out the possibility and the direction for improving the D* value, hence the promising prospect of this kind of device.

Abstract: Based on the anisotropic Seebeck tensor coefficients, a light-thermo-radiation detector made of high-Tc superconductor (YBa2Cu3O7-$\delta$) was fabricated, which can function at room temperature. The induced voltaic signals at various modulation frequencies for radiation from He-Ne laser and from a 500 K black body were measured. The noise ratio for detecting He-Ne laser radiation and the D* for black body were evaluated. Compared with bolometer made of high-Tc superconductor which functions at liquid nitrogen, and with pyroelectric detector, it was found that the advantages of this new device are that the device can work at room temperature with very low noise and very fast response. Although having a lower D* value than that of bolometer for the present device construction, we point out the possibility and the direction for improving the D* value, hence the promising prospect of this kind of device.

中图分类号: 

  • 74.72.Bk
07.57.Kp (Bolometers; infrared, submillimeter wave, microwave, and radiowave receivers and detectors) 42.55.Lt (Gas lasers including excimer and metal-vapor lasers) 44.40.+a (Thermal radiation)