High speed quantum well optical detector

Details High speed quantum well optical detector High speed quantum well optical detector

H - Electricity

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H01L 31/10 (2006.01) H01L 31/0352 (2006.01) H01L 31/105 (2006.01)

Patent

CA 1294350

High Speed Quantum Well Optical Detector Abstract In response to ultrafast optical signal pulses, it is now possible to generate correspondingly ultrafast electrical signal pulses by employing semiconductor apparatus including at least one quantum well layer electrically biased by a static electric field. Optical signal pulses incident on the quantumwell are at a wavelength substantially less than the absorption edge of the quantum well layer or layers. In other words, the incident optical pulses have amean photon energy less than the bandgap energy of the quantum well layer or layers. The electrical signal pulse generated subsists for a period of time substantially equal to the duration of the optical signal pulses incident on thequantum well layer or layers.

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