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Rectifying the Optical-Field-Induced Current in Dielectrics: Petahertz Diode
J D Lee1, Won Seok Yun1, Noejung Park2
1Department of Emerging Materials Science, DGIST, Daegu 711-873, Korea.
Abstract:
Investigating a theoretical model of the optical-field-induced current in dielectrics driven by strong few-cycle laser pulses, we propose an asymmetric conducting of the current by forming a heterojunction made of two distinct dielectrics with a low hole mass (m_{h}^{*}≪m_{e}^{*}) and low electron mass (m_{e}^{*}≪m_{h}^{*}), respectively. This proposition introduces the novel concept of a petahertz (10^{15} Hz) diode to rectify the current in the petahertz domain, which should be a key ingredient for the electric signal manipulation of future light-wave electronics. Further, we suggest the candidate dielectrics for the heterojunction.
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