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研究了在波长为0.68μm的连续激光辐照下,钇钡铜氧(YBCO)高温超导(HTS)微带线的非平衡光响应特性,并从超导体机制探索和光响应超导器件研制两个角度对实验现象进行讨论。实验观察到高温超导微带线的非平衡光响应阈值,当功率小于15 mW时,以辐射热效应为主;当功率大于15 mW时,出现非平衡光响应。该阈值的发现,是对Zeldov的“热效应”与“光子效应”同时存在理论的进一步完善,并设想了一种新型的高温超导衰减器;研究了高温超导微带线非平衡光响应的恢复时长,当激光功率为45 mW时,恢复时长约为3.5 s,分析了该时长存在的机制及其对光响应超导器件二次激光激励的影响。
The unbalanced photoresponse of YBCO HTS microstrip lines under continuous laser irradiation with a wavelength of 0.68 μm was studied. From the investigation of the superconductor mechanism and the development of two photoresponsive superconducting devices Angle of the experimental phenomenon to be discussed. The non-equilibrium photoresponse threshold of HTS microstrip line was observed experimentally. When the power was less than 15 mW, the radiant heat effect was dominant. When the power was greater than 15 mW, the unbalanced photoresponse was observed. The discovery of this threshold is a further improvement of the coexistence theory of Zeldov’s “thermal effect” and “photon effect”, and a new type of high-temperature superconducting attenuator is also envisaged. The effects of high-temperature superconducting microstrip line non-equilibrium optical response When the laser power is 45 mW, the recovery time is about 3.5 s, and the mechanism of the duration and the influence on the secondary laser excitation of the photo-responsive superconducting device are analyzed.