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To evaluate terahertz emission from intrinsic Josephson junctions, we used a YBa2Cu3O7−δ (YBCO) grain boundary Josephson junction as a terahertz detector. Shapiro steps have been clearly seen on the current-voltage curves of the YBCO junction irradiated with the emission from either a VDI-Tx-S140 transmitter (tens of μW at 620 GHz) or a Bi2Sr2CaCu2O8−x stack (25 μW at 500 GHz). While the harmonic...
To evaluate terahertz emission from intrinsic Josephson junctions, we use a YBa2Cu3O7 grain boundary Josephson junction as a detector. Shapiro steps on the current-voltage characteristics of the detector were clearly observed and their positions moved with the bias voltage of the emitter accordingly. Analyzing the current-voltage characteristics of the detector, we found that the emission was tuned...
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