Mirror structure for reducing the effect of feedback on a VCSEL

Details Mirror structure for reducing the effect of feedback on a VCSEL Mirror structure for reducing the effect of feedback on a VCSEL

2005-04-19

2005-04-19

Leung, Quyen (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S096000

Reexamination Certificate

active

06882673

ABSTRACT:
An exemplary embodiment of the present invention integrates an absorbing layer into the emitting mirror of a VCSEL to reduce the reflectivity of the emitting mirror as seen by the feedback optical wave. The absorbing layer may be made of a suitable semiconductor material, such as a GaAs layer in a laser emitting near 850 nm or highly doped p-layer, and may disposed epitaxially in a semiconductor or metamorphic mirror. Alternatively, a metal layer may be disposed in the dielectric portion of a hybrid mirror or all-dielectric mirror.

REFERENCES:
patent: 5574738 (1996-11-01), Morgan

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