Patent ID: 8774244

Claim:
A laser source assembly for providing an assembly output beam directed in an output direction along an assembly axis of the laser source assembly, the laser assembly comprising: a mounting base; a first quantum cascade emitter that emits a first beam in the output direction along a first beam axis, the first quantum cascade emitter being secured to the mounting base so that the first beam axis that is substantially parallel to and spaced apart from the assembly axis; a first lens that collimates the first beam, the first lens being coaxial with the first beam axis; a second quantum cascade emitter that emits a second beam in the output direction along a second beam axis, the second quantum cascade emitter being secured to the mounting base so that the second beam axis is substantially parallel to and spaced apart from the assembly axis; a second lens that collimates the second beam, the second lens being coaxial with the second beam axis; a third quantum cascade emitter that emits a third beam in the output direction along a third beam axis, the third quantum cascade emitter being secured to the mounting base so that the third beam axis is substantially parallel to and spaced apart from the assembly axis, wherein the first beam axis, the second beam axis and the third beam axis are positioned spaced apart about and substantially equidistant from the assembly axis; a third lens that collimates the third beam, the third lens being coaxial with the first beam axis; and a beam adjuster assembly positioned on the assembly axis that receives the first beam, the second beam and the third beam, wherein the first beam is non-folded and travels in only the output direction along the first beam axis between the first quantum cascade emitter and the beam adjuster assembly, wherein the second beam is non-folded and travels in only the output direction along the second beam axis between the second quantum cascade emitter and the beam adjuster assembly, and wherein the third beam is non-folded and travels in only the output direction along the third beam axis between the third quantum cascade emitter and the beam adjuster assembly.