Laser pumping unit and high power laser device tunnel...

Details Laser pumping unit and high power laser device tunnel... Laser pumping unit and high power laser device tunnel...

2005-07-28

2009-10-06

Fahmy, Wael (Department: 2814)

Coherent light generators

Particular active media

Semiconductor

C372S050124, C372S101000, C372S108000

Reexamination Certificate

active

07599417

ABSTRACT:
Embodiments include a laser pumping unit and a high power vertical external cavity surface emitting laser (VECSEL) device including the same. The laser pumping unit easily diffuses current in a traverse direction by using a tunnel junction. The laser pumping unit may include a substrate, a lower distributed brag reflector (DBR) layer formed on the substrate, an active layer with a quantum well structure formed on the lower DBR layer to generate a light having a predetermined wavelength, a tunnel junction layer formed on the active layer to increase resistance in a vertical direction, and an upper DBR layer formed on the tunnel junction layer.

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patent: 2005/0063440 (2005-03-01), Deppe
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