Accession Number:

ADD019383

Title:

Polarized Optical Emission Due to Decay or Recombination of Spinpolarized Injected Carriers

Descriptive Note:

Patent, Filed 29 Jun 93, patented 23 Feb 99

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1999-02-23

Pagination or Media Count:

7.0

Abstract:

A device for producing circularly polarized optical emission includes a light emitting semiconductor heterostructure, further including at least one semiconducting layer a ferromagnetic contact having a magnetic moment, in electrical contact with a layer of the semiconductor heterostructure and a contact electrically connected to a different region of the semiconductor heterostructure. This light emitting semiconductor heterostructure may be a light emitting diode LED, or some other structure. The ferromagnetic contact injects spin polarized carriers electrons or holes into the semiconducting device, which recombine with their opposing carriers to produce circularly polarized light. A process for producing circularly polarized optical emission includes applying a bias across a light emitting semiconductor heterostructure having a contact with a net magnetic moment, thereby injecting spin polarized carriers into the light emitting semiconductor heterostructure.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE