Back to results
US 4,065,730 AGranted
Laser optical coupler
AssigneeSperry Rand Corporation
InventorHenry T. Minden
Life of this patent
Estimating the term…
Abstract
Light is efficiently coupled from a laser into a dielectric optical wave guide without the use of additional optical components. An oscillating mode using total internal reflection within the laser element is employed, one face of the element intimately contacting a wave guide light output coupling wall.
Claims8
Laser apparatus comprising:
- a laser diode having a right rectangular parallelipiped semiconductor body, said body having a layer wherein laser light is generated disposed between first and second opposed major rectangular surfaces of said body,
- said body having a cleaved light-emitting surface disposed at right angles to said opposed major rectangular surfaces,
- first and second electrical contacts disposed respectively directly on said opposed major rectangular surfaces of said semiconductor body,
- said first contact being so disposed on said first opposed major rectangular surface as to inhibit light generation except in a parallelogram located at the diagonal of said right rectangular parallelipiped semiconductor body within the light generating layer, only one corner of said parallelogram contacting said cleaved light-emitting surface,
- said parallelogram having a length substantially equal to said diagonal and a width substantially smaller than said length, and
- a dielectric optical wave guide having first and second planar broad walls, said first planar broad wall being in optical contact with said cleaved light-emitting surface whereby a major portion of said laser light is refracted at said cleaved surface into said dielectric optical wave guide for propagation therein by successive total reflections.
3 more elements
Laser apparatus comprising:
- a laser diode having a right rectangular parallelepiped semiconductor body, said body having a layer wherein laser light is generated disposed between opposed first and second major surfaces,
- said first electrical contact comprising an electrically conductive strip extending diagonally from said first to said second diagonally opposed corners, and
- a dielectric optical wave guide having first and second planar broad walls, said first planar broad wall being in optical contact with said first cleaved surface whereby a major portion of said laser light incident upon said cleaved surface is refracted at said first corner into said dielectric optical wave guide for propagation therein by successive total reflections.
Dependencies are inferred from the claim text.