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Some experiments with laser beam (success beam sport decreasing)

Some experiments with laser beam (success beam sport decreasing)

We are trying to reduce laser beam spot with a different lens.

Standard 3 element lens

Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)

Adding additional semicilindrical lens

Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)
Some experiments with laser beam (success beam sport decreasing)

Original images where you can measure the actual size

The problem that existing 3 elements, G2, G7 lens only decrease laser spot in one axis but do not decrease in the other. The is why you always see a rectangle and can not make it smaller to round or square.
3 element lens

We add a new flat convex lens.
3 element lens + flat convex lens

Further experiment

We setup a flat convex lens on 80 mm range from the laser diode. Closer to the surface.

 

we added Laser Beam Corrective Cylindrical Mirro set/For High Power 450nm laser Diode
For 405nm-450nm-465nm-473nm High Power Laser Diode’s Beam Collimation and correction.
With AR Coating.
Size: 8mm(L)x7mm(W)x2.5mm(thickness)
Width reduction´╝Ü~2 times

200*350 microns final beam spot vs. initial 400*600

About different lens: laser beam spot, focal range.

this means that the density of the laser spot will be 400*600 / 200*350 = 3.4 times more, therefore, Endurance lasers can be ~3-3.4 times more efficient compared to standard 3 element

New laser lens developing scetch

new lens for Endurance lasers
Alternative laser lens focusing sketch

[Total: 3    Average: 3.7/5]