Quantum-well radiation-interactive device, and methods of radiat

Details Quantum-well radiation-interactive device, and methods of radiat Quantum-well radiation-interactive device, and methods of radiat

1989-06-06

1991-06-11

Hille, Rolf

357 16, H01L 2714

Patent

active

050236857

ABSTRACT:
Electromagnetic radiation such as, in particular, infrared radiation is detected opto-electronically by means of a superlattice structure forming quantum wells having a single bound state; in the interest of minimizing dark-current, relatively wide barriers are used between quantum wells. Resulting highly sensitive, high-speed detectors can be used in optical communications, for terrain mapping, and for infrared viewing. Furthermore, upon application of a variable electrical potential across the superlattice structure, radiation traversing such structure can be modulated.

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patent: 4718947 (1988-01-01), Arya
patent: 4894526 (1990-01-01), Bethea et al.
Dohler, "Solid State Superlattices", Scientific American, Nov. 1983.

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