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ArcticMyst Security by Avery
looking for beam expander for 3.5W 445
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IsaacT
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That means that per square centimeter, 500mW of power can be passed without damage to the Deam Expander. Or atleast, that is how I interpret it.
Blord
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Be ware that the beamexpander will also enhance the beam profile of the multimode 445nm laser. The small bar shaped dot will be much larger on short distance.
so no way to lase 3.5w through it , unless i can make the beam spread over more then 2cm^2
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Hi SSS,
That max. power rating sounds a bit low to me. Can you give us some links to the products and specs that you're talking about?:thinking:
Regarding their use with multimode beams, I don't see any issues as long as your beam dimensions don't exceed the maximum input beam diameter of the expander.
EpicHam
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I don't think a beam expander will do you much good with a 445nm tho .
In the effects of Rayleigh scattering , the perceived beam size is big enough already .
What are you trying to achieve with a beam expander on a 445nm anyway?
What is the diode's divergence? Beam diameter?
Need some specs brah
In the effects of Rayleigh scattering , the perceived beam size is big enough already .
What are you trying to achieve with a beam expander on a 445nm anyway?
What is the diode's divergence? Beam diameter?
Need some specs brah
I wrote in first post - trying to lower beam divergence. Expander makes the beam "bigger", but also reduces divergence, so at long distance, the dot will be smaller with expander used.
