In this work, pulse laser detectors based on the transverse thermoelectric effect of YBa₂Cu₃O_7-δ thin films on vicinal cut LaAlO₃ (001) substrates have been fabricated. The anisotropic Seebeck coefficients between ab-plane (S_ab) and c-axis (S_c) of thin films are utilized to generate the output voltage signal in such kind of detectors. Fast response has been determined in these sensors, including both the rise time and the decay time. Under the irradiation of pulse laser with the pulse duration of 5–7 ns, the output voltage of these detectors shows the rise time and the decay time of 6 and 42 ns, respectively, which are much smaller than those from other materials. The small rise time in YBa₂Cu₃O_7-δ-based detectors may be due to its low resistivity. While the high thermal conductivity and the large contribution of electronic thermal conductivity to the thermal conductivity of YBa₂Cu₃O_7-δ are thought to be responsible for the small decay time. In addition, these detectors show good response under the irradiation of pulse lasers with a repetition rate of 4 kHz, including the precise determinations of amplitude and time. These results may pave a simple and convenient approach to manufacture the pulse laser detectors with a fast response.

中文翻译：

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利用薄膜的横向热电效应进行脉冲激光检测

_{在这项工作中，基于YBa 2} Cu ₃ O _7-δ薄膜在相邻切割的LaAlO ₃ (001) 衬底上的横向热电效应，制造了脉冲激光探测器。ab平面 ( S _ab ) 和c轴 ( S _c )之间的各向异性塞贝克系数) 薄膜用于在这种检测器中产生输出电压信号。在这些传感器中确定了快速响应，包括上升时间和衰减时间。在脉冲持续时间为5~7 ns的脉冲激光照射下，这些探测器的输出电压分别呈现出6和42 ns的上升时间和42 ns的衰减时间，远小于其他材料的输出电压。_{YBa 2} Cu ₃ O _7-δ基探测器中的小上升时间可能是由于其低电阻率。_{而YBa 2} Cu ₃ O _7-δ的高热导率和电子热导率对热导率的贡献很大被认为是造成小衰减时间的原因。此外，这些探测器在重复频率为 4 kHz 的脉冲激光照射下表现出良好的响应，包括幅度和时间的精确测定。这些结果可能为制造具有快速响应的脉冲激光探测器提供了一种简单方便的方法。