High brightness, monolithic, multispectral semiconductor laser

摘要

A system and method for combining multiple emitters into a multi-wavelength ouput beam having a certain band and combining a plurality of these bands into a single output using non-free space combining modules.

主权项

1. A multi-broadband beam non-free space combiner comprising:
a plurality of laser beam emitters each configured to emit a plurality of input optical beams each having a different wavelength; a plurality of solid, non-free-space beam combining modules each comprising:
an exterior surface defining a plurality of external facets, wherein at least one facet is configured as an input facet to receive the plurality of input optical beams from one of the laser beam emitters;a plurality of optical modifying surfaces contained within the beam combining module including at least one beam converging surface, a diffraction surface, and a partially reflective surface, wherein the at least one beam converging surface is configured to receive the input optical beams and combine them substantially near the diffraction surface, wherein the diffraction surface receives the combined beams and transmits a multi-wavelength beam onto the partially-reflective surface, and wherein the partially-reflective surface (i) receives the multi-wavelength beam, (ii) reflects a portion of the combined beams back to the laser beam emitter via the diffraction surface, wherein the reflected portion of the combined beams stabilizes each of the input optical beams to its wavelength, and (iii) transmits the multi-wavelength beam; and at least one dichroic combiner comprising:
at least two input facets configured to receive the multi-wavelength beams,wherein one of the input facets is coated to internally reflect a first multi-wavelength beam having a first wavelength band and transmit a second multi-wavelength beam having a second wavelength band, wherein the first-reflected and second-transmitted multi-wavelength beams are combined into a co-bore sighted multi-band beam, and an output surface configured to transmit the multi-band beam.