›› 2014, Vol. 23 ›› Issue (11): 118502-118502.doi: 10.1088/1674-1056/23/11/118502
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
张青雅a b, 王天顺c d, 刘建设a b, 董文慧a b, 何根芳a b, 李铁夫a b, 周幸祥c d, 陈炜a b
Zhang Qing-Ya (张青雅)a b, Wang Tian-Shun (王天顺)c d, Liu Jian-She (刘建设)a b, Dong Wen-Hui (董文慧)a b, He Gen-Fang (何根芳)a b, Li Tie-Fu (李铁夫)a b, Zhou Xing-Xiang (周幸祥)c d, Chen Wei (陈炜)a b
摘要: We report the optical response characteristics of Al/Ti bilayer transition edge sensors (TESs), which are mainly comprised of Al/Ti bilayer thermometers and suspended SiN membranes for thermal isolation. The measurement was performed in a 3He sorption refrigerator and the device's response to optical pulses was investigated using a pulsed laser source. Based on these measurements, we obtained the effective recovery time (τ eff) of the devices at different biases and discussed the dependence of τeff on the bias. The device with a 940 μm × 940 μm continuous suspended SiN membrane demonstrated a fast response speed with τ eff = 3.9 μs, which indicates a high temperature sensitivity (α = T/R ·d R/dT = 326). The results also showed that the TES exhibits good linearity under optical pulses of variable widths.
中图分类号: (Superconducting optical, X-ray, and γ-ray detectors (SIS, NIS, transition edge))