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(주)유니오텍의 소식과 업계 동향을 확인할 수 있습니다.
Pulsed laser diodes are becoming more and more efficient and powerful.
Thus,
they represent a viable alternative to large and expensive laser systems.
One
advantage of solid-state lasers is the very good beam profile.
Achieving this
with semiconductor laser diodes requires the use of external beam-shaping
elements or homogenizers.
Diffusing lenses, diffractive elements, or long
optical fibers may be used;
however, in all of these approaches either power is
lost or the mechanical effort is very large.
Our developers in Canada were successful in connecting powerful,
multi-junction PLDs to a special fiber structure,
thus allowing a homogeneous
beam profile to be achieved after just a few centimeters.
Picture 1 shows the
near-field distribution of a pulsed laser diode with three
epitaxially-integrated emitters.
After just 13 mm (see Picture 2), a
significantly more homogeneous beam profile is visible.
Picture 3 shows the beam
profile after 55 cm. The advantage of this assembly is that it is compact and
robust and simultaneously exhibits low losses and thus a higher peak power.
Prototypes are currently being built. If you are interested, we are still able
to include any desired changes.
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