End pumping vertical external cavity surface emitting laser...

Details End pumping vertical external cavity surface emitting laser... End pumping vertical external cavity surface emitting laser...

2006-08-23

2009-02-17

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S050124, C372S099000

Reexamination Certificate

active

07492802

ABSTRACT:
Provided is a vertical cavity external surface emitting laser (VECSEL) apparatus in which incidence loss of a pumping beam can be reduced. The VECSEL apparatus includes: a laser chip including: an anti-reflection coating (ARC) layer to which a pumping beam is incident; a low Herpin Index distributed Bragg reflector (LHI-DBR) having a LHI stack structure; and a periodic gain layer that is formed on the LHI-DBR and generates laser light by being excited by the pumping beam; and an external cavity mirror that is installed outside the laser chip and faces the periodic gain layer and constitutes a laser cavity with the LHI-DBR.

REFERENCES:
patent: 5206872 (1993-04-01), Jewell et al.
patent: 2007/0058688 (2007-03-01), Kim et al.

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