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Fiber corrected 638nm laser diode find on eBAy

kecked

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looks interesting. Divergence is 1:9. 1:9. Square. With no correction. It sure if this was posted before. Same group repackaging blue diodes in windowed cases with inert gas. I’m impressed.
 



Alaskan

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Check with CDBEAM777, he has some of these and I believe, characterized them.
 

kecked

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Yea I’m sending email to see if they will glue two to a pbs cube and the do a second with a blue and green. One dichro only then.
 

Alaskan

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Problem I have been having with all laser diodes is the angles of their outputs are not consistent enough :( I wonder if their adding a FAC by hand might skew it even more.
 

Shmackitup

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I have some of these as well. The FAC doesn't really do too much once you add a collimator lens. It goes back to being a rectangle when focused.
 

Alaskan

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Damn, I was so hopeful, but thank you for the info.
 

Unown (WILD)

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I bought this and totally forgot I had it. I should complete the build and see how well it does with a g2 and g8 lens.

 

aaronnoraa

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There was something that I remembered about these diodes, that for the FAC to be able to do it's job you must use a long FL lens (like, really long, enough that it will need to be larger than what will fit on a 12mm module) to allow the beam to expand enough that the profile is square when it inputs the lens, then the beam will stay square after collimation.
 




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