It's a long shot. Most of you know a famous projector stuffed with a lot of laser diodes what shine on a yellow wheel. The wheel is rotated by a motor. Thus, my question.
What is this motor?
It has seven pins. Some numbers on the cable but nothing googles out. Thnx for any help.
Aspherical lenses usually are design to collimate beams. You can read about them at http://www.lightpath.com/wp-content/uploads/2015/11/Using-Precision-Molded-Aspheres.pdf
There are special ones for fiber coupling (or imaging) when a single one does a job. Usually the distances are very short...
+ responding in a manner that the project has some "secrecy" will turn people away. YOU need help. OP, if you can not share information you shall consider hiring consultants and signing NDAs.
Also look at local laws about using powerful lasers outside.
Late to the party :)
If really a stable operation is needed, you shall have an active temperature controller for the whole unit and a stable voltage supply for the heater. The laser driver shall be stable too (I think that is obvious). Even that is not enough for a long term. An external...
Is it a duct tape on a heatsink? Do you really need it? It covers quite a lot of surface and reduced heat exchange.
Also consider blowing area across the laser base (not a long) to reduce flowing air influence on the beam.
You might read this https://www.researchgate.net/publication/29860964_Facet_degradation_of_GaN_heterostructure_laser_diodes
Or a short abstract
I think it gives ideas what might happen to an exposed laser chip.
Not clear air - dust, aerosols - are another no-no for lasers.
I subscribed to the thread without writing anything. But it annoys me to see all capitals in Raman when I receive emails about new posts. It's not an acronym, it's a person name. Would it be possible to change/correct it?
Hopefully someone will not create a thread about CARS LOL
I see done it in a very complicated way LOL
Recognize something what is not a natural thing (a garbage) by image processes acquired by satellites. Then send a helicopter with a powerful laser to shoot and do a breakdown spectroscopy. Figure out that it was a degradable paper, recall back all...
I might imagine the cube of light of those dimensions but it would be good to see a picture what you really need.
Do you really need a collimated sheet?
Would a cylindrical lens be enough instead of the Powell lens?
I used three types - ruby, diamond, and carbide.
The most inconvenient was with the diamond - the edge is short.
I did not feel that carbide was sharp enough.
Ruby is fine when it's new and hasn't chipped.
Red color stands out on a fiber. Thus you're working not just on a feeling but with eyes...