Importance

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Abstract

An electromagnetic-wave generation device including an emitter section including a first electrode, a collector section including a second electrode, a carrier-travel section placed between the emitter section and the collector section, a voltage-application unit configured to apply a voltage so that a potential of the second electrode becomes higher than a potential of the first electrode, and a light-irradiation unit configured to radiate light is provided, where the carrier-travel section includes a first semiconductor extending along a direction in which an electron carrier travels, and where the emitter section includes a second semiconductor that is formed in contact with the first semiconductor, and that achieves a potential barrier, and is configured so that the carrier goes beyond the potential barrier and is emitted to the carrier-travel section only when being irradiated with the light.

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First Claim