Surface-emitting light emitting device

Details Surface-emitting light emitting device Surface-emitting light emitting device

1984-11-21

1987-04-21

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

357 16, 357 17, 372 44, 372 46, H01L 3300, H01S 319

Patent

active

046602070

ABSTRACT:
A surface-emitting, light emitting device has a columnar active region of one direct bandgap semiconductor and a surrounding confining region of a higher bandgap semiconductor. Contacts are made to the active and confining regions and a window is formed in the device in alignment with the active region to permit light emission from the device. The semiconductors are doped to establish a pn junction within a carrier diffusion length of the heterojunction between the active and confining regions, the pn junction extending the length of the active region. In use, light is emitted along the axis of the columnar active region in response to current passing radially across the pn junction.

REFERENCES:
patent: 3703670 (1972-11-01), Kunz
patent: 4092659 (1978-05-01), Ettenberg

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