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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper TUM47

Switching-time measurements of a resonant-tunneling diode

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The switching time of a heterojunction double-barrier resonant-tunneling diode (RTD) has been measured using electrooptic sampling techniques. Quantum-mechanical tunneling in these single quantum wells is the fastest known charge-transport mechanism in semiconductors. This class of device exhibits such features as negative differential resistance (NDR), an extremely fast current response,1 and a high-frequency output when applied as an oscillator,2 Now, using a laser-based sampling system having a demonstrated subpico-second temporal response,3 a switching time of <2 ps has been measured for a double-barrier RTD. This indicates the potential utility of these devices as high-speed logic devices.4

© 1988 Optical Society of America

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