There seems to be no forum Table showing maximum beampoint intensity (mW) at longer distances, regardless of beam color. In other words, minimum divergence. I see posts stating that beam divergence is a function of wavelength (this number is easy to get) and beam diameter (this number is not easy to get). The larger the wavelength number, the larger and worse the divergence. The larger the beam diameter, the lesser and better the divergence.

Also, some higher power diodes, especially in the blue colors, tends to have large divergences. So getting a higher power diode does not necessarily get you higher beam intensity at long distances due to worse divergence at those distances.

Anyway, is there any way to figure out what diode to get for highest beam intensity at longer distances? This question is regardless of beam color, I am only interested in beam shape with highest intensity at longer distances.

I am also assuming that a beam expander will improve divergence of any beam so getting the best beam without the expander and then adding the expander will get me an even better beam, ultimately.

Maybe this info is somewhere on this forum but I don't see it.

For starters, any suggestions on which diodes I might consider will be helpful.

Thank you for your help and input.

Also, some higher power diodes, especially in the blue colors, tends to have large divergences. So getting a higher power diode does not necessarily get you higher beam intensity at long distances due to worse divergence at those distances.

Anyway, is there any way to figure out what diode to get for highest beam intensity at longer distances? This question is regardless of beam color, I am only interested in beam shape with highest intensity at longer distances.

I am also assuming that a beam expander will improve divergence of any beam so getting the best beam without the expander and then adding the expander will get me an even better beam, ultimately.

Maybe this info is somewhere on this forum but I don't see it.

For starters, any suggestions on which diodes I might consider will be helpful.

Thank you for your help and input.

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