Optical Responses of Josephson Vortex Flow Transistors under Irradiation of Femtosecond Laser Pulses

Optical Responses of Josephson Vortex Flow Transistors under Irradiation of Femtosecond Laser Pulses
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飞秒激光脉冲照射下约瑟夫森涡流晶体管的光学响应

DOI:
10.1143/jjap.46.2381
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发表时间:
2006
影响因子:
1.5
通讯作者:
M. Tonouchi
M. Tonouchi
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Y. Doda;I. Kawayama;H. Murakami;M. Tonouchi

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我们制造了约瑟夫森涡流晶体管(JVFT),它由约瑟夫森结的平行阵列和控制电流线组成,以在结处施加外部磁场。我们观察到直流电流输入对流动电压的调制。根据这些结果,我们估计了互感和自感,并计算了 JVFT 的工作频率。接下来,将由光学斩波器调制的飞秒激光脉冲照射到约瑟夫森结阵列。结果,我们在电流-电压特性中观察到输出电压增加,并且输出电压的明显调制具有与光斩波速率相同的周期。这些结果表明 JFVT 可以用作超导电路的光学输入接口。
We have fabricated Josephson vortex flow transistors (JVFTs) that consist of a parallel array of Josephson junctions and a control current line to apply the external magnetic field at the junctions. We observed modulations of the flow voltage with a DC current input. From these results, we estimated the mutual inductance and the self-inductance, and calculated the operation frequency of the JVFT. Next, femtosecond laser pulses modulated by an optical chopper were irradiated to the Josephson junction array. As a result, we observed an increase in the output voltage in the current-voltage characteristics, and the clear modulation of the output voltage with the same period as the optical chopping rate. These results suggest that a JFVT can operate as an optical input interface for superconducting circuits.
用于超导/半导体混合器件的非晶Ge薄膜的超快光学研究
DOI: --
发表时间: 2004
期刊: Physica C Vol. 412-414
影响因子: --
作者:
T.Miyadera;T.Kiwa;I.Kawayama;H.Murakami;M.Tonouchi
通讯作者: M.Tonouchi
高温超导薄膜约瑟夫森涡流晶体管的直流和交流响应
DOI: --
发表时间: 2006
期刊: IEICE Trans. Electron. Vol. E89-C No.2
影响因子: --
作者:
Y.Doda;I.Kawayama;H.Murakami;M.Tonouchi
通讯作者: M.Tonouchi