Lighting device equipped with coaxial line laser diodes and...

Details Lighting device equipped with coaxial line laser diodes and... Lighting device equipped with coaxial line laser diodes and...

2011-08-23

2011-08-23

Stultz, Jessica T (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S043010, C372S096000

Reexamination Certificate

active

08005125

ABSTRACT:
The present invention provides a fabrication method of coaxial line laser diodes and a coaxial lighting optical fiber which disperses and guides uniform emission of light from a coaxial line laser diode. The line coaxial laser diode can be extended at a greater length to generate more spontaneous emission photons which are emitted from an elongated tubular active layer. The active layer has a uniform built-in electric field to distribute uniform current therein to get higher quantum efficiency. The length of the coaxial laser diode can be increased through a VLSED method. A longer laser ingot can be produced and cut to a large number of coaxial laser diodes. This method can reduce the waste of cutting in the wafer process and get larger lighting areas. Both the coaxial line laser diode and the coaxial lighting optical fiber can be coupled to form a high efficiency white-emitting luminescence device.

REFERENCES:
patent: 4742378 (1988-05-01), Ito et al.
patent: 5663979 (1997-09-01), Marshall
patent: 7589880 (2009-09-01), Kempa et al.

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