We report on the response of a monolithic high Tc transition-edge bolometer to about 3 mmWave for the first time. The detector structure consisting of 400-nm YBa2Cu3O7-x (YBCO) film on buffered yttria stabilized zirconia substrate without any coupled antenna, shows bolometric type responsivity to the 3-mmWave radiation at its transition temperature. The YBCO thin film and Ce0.9La0.1O2 buffer layer are both fabricated by the metal-organic deposition method. The meander line pattern of the bolometer is designed for obtaining maximum absorption and responsivity possible when the polarized radiation of the source is aligned with the pattern. Meander lines are 50 micrometers wide and 1.5-mm long. We have measured amplitude and phase of the response versus modulation frequency of the detector to the linearly polarized 95-GHz source, and the detector was biased at five distinct temperatures at the transition corresponding to five different electrical conductivities of the YBCO film. When the meander lines of the device are parallel to the incident beam polarization, the YBCO pattern is speculated to act as a dissipative antenna resulting in higher absorption leading to high magnitude of the response as observed. The results from the measured phase of the response versus modulation frequency are also in agreement with the discussed absorbed mechanism. The absorption of the YBCO pattern is also measured to depend on the electrical conductivity of the YBCO film and our results show that there is an optimum electrical conductivity for having maximum absorption for this detector. Simulation results for this structure confirm the experiments showing that at electrical conductivity value of 1.33 × 105 S/m we have the maximum absorption for our device. These observations promise design of versatile THz and millimeter-wave detectors with potential for applications in medical and security imaging.

中文翻译：

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全金属有机沉积 YBCO 过渡边缘测辐射热计的毫米波响应


我们首次报告了单片高温过渡边缘测辐射热计对约 3 毫米波的响应。探测器结构由缓冲氧化钇稳定氧化锆基板上的 400 nm YBa2Cu3O7-x (YBCO) 薄膜组成，没有任何耦合天线，在其转变温度下显示出对 3 毫米波辐射的辐射热型响应度。 YBCO薄膜和Ce0.9La0.1O2缓冲层均采用金属有机沉积方法制备。测辐射热计的曲折线图案设计用于当源的偏振辐射与图案对齐时获得可能的最大吸收和响应度。曲折线宽 50 微米，长 1.5 毫米。我们测量了探测器对线偏振 95 GHz 源的响应幅度和相位与调制频率的关系，并且探测器在对应于 YBCO 薄膜五种不同电导率的转变处的五个不同温度下偏置。当器件的曲折线与入射光束偏振平行时，YBCO 图案被推测充当耗散天线，导致更高的吸收，从而导致观察到的高响应幅度。响应相位与调制频率的测量结果也与讨论的吸收机制一致。 YBCO 图案的吸收也根据 YBCO 薄膜的电导率进行测量，我们的结果表明，存在最佳电导率以使该探测器具有最大吸收。该结构的模拟结果证实了实验表明，在电导率为 1.33 × 105 S/m 时，我们的器件具有最大吸收能力。 这些观察结果有望设计出具有医疗和安全成像应用潜力的多功能太赫兹和毫米波探测器。