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[Laser Components] Pulsed Laser Diodes with a Homogeneous Beam Profile

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작성자 관리자 조회 14,564회 작성일 15-07-23 18:31

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Compact and Robust


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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