Method and device for rapid photo-detection by means of a super-

Details Method and device for rapid photo-detection by means of a super- Method and device for rapid photo-detection by means of a super-

1986-09-02

1989-02-21

James, Andrew J.

357 16, 357 30, H01L 2712

Patent

active

048069930

ABSTRACT:
To detect a temporal variation, in particular an ultrashort pulse, in a beam of electromagnetic radiation, this beam is applied to a super-lattice of type II, along its axis of growth, and the voltage between the opposite sides of the network along the same axis is determined. The super-lattice is preferably a composite super-lattice, in particular, with alternate layers of indium arsenide and of gallium antimonide. The method is, in particular, applied in the infrared range.

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Capasso et al, "New Transient Electrical Polarization Phenomenon in Sawtooth Superlattices", Physical Review Letters, vol. 51, No. 25, 19 Dec. 1983, pp. 2318-2321.
Agusta, "Light to Voltage Converter", IBM Technical Disclosure Bulletin, vol. 9, No. 2, Jul. 1960, pp. 219-220.
Dohler, "Doping Superlattices", J. Vac. Sci. Technol., 16131, May/Jun. 1979, pp. 851-856.

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