High power vertical external cavity surface emitting laser

Details High power vertical external cavity surface emitting laser High power vertical external cavity surface emitting laser

2006-08-01

2008-08-26

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

C372S070000

Reexamination Certificate

active

07418024

ABSTRACT:
Provided is a vertical external cavity surface emitting laser (VECSEL) including: a bottom DBR mirror formed on a substrate; an RPG layer formed on the bottom DBR layer; a capping layer formed on the RPG mirror; an optical pump irradiating a pump beam onto a surface of the capping layer; and an external cavity mirror installed on an external surface of a stacked layer corresponding to the bottom DBR mirror. The RPG layer includes: a plurality of first barrier layers periodically formed on nodes of a standing wave and formed of a material having a larger energy band gap width than that of the pump beam; and a plurality of gain layers including a plurality of QW layers formed of InGaAs and disposed between the first barrier layers, and a plurality of second barrier layers disposed on upper and lower portions of the QW layers.

REFERENCES:
patent: 6859481 (2005-02-01), Zheng
patent: 2004/0013154 (2004-01-01), Zheng
patent: 2005/0281309 (2005-12-01), Kim

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