Single spatial mode output multi-mode interference laser...

Details Single spatial mode output multi-mode interference laser... Single spatial mode output multi-mode interference laser...

2008-04-29

2008-04-29

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Mode locking

C372S050100

Reexamination Certificate

active

11560047

ABSTRACT:
The invention relates to a conventional broad-area laser having a single-mode output through the phenomenon of multimode interference (MMI) in step-index waveguides. Another aspect of the present invention relates to a very robust multi-mode compound cavity laser design that is fully defined by the geometry and the refractive index profile of the MMI region, which is quite insensitive to slight macro-scale refractive index variations due to manufacturing variation or temperature. As the self-imaging position shifts linearly in the refractive index, the confocal beam parameter can be made relatively long.

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