Limecat
0
- Joined
- Dec 25, 2009
- Messages
- 140
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Hello i've been lurking for a while and this is my first post.
Anyway I've searched the forum and such and I think this is the most appropriate place to post this.
I'd like to reconduct some of the experiments out lined in my university optics course (which I bombed extremely badly)
I've crafted a laser driver before (basically a power supply whose outputs go straight to a current source circuit) and had it hooked up to a diode and had it work. My current problem is I need to get lenses. Specifically, larger diameter lenses. They don't need to be special lenses or anything but they do need to have a focal length in the 50mm - 200mm range. Their diameters should be like 3" - 4" at least. I need them in order to diverge the beam and the re-collimate it at a different beam width. I am thinking specifically of the fourier transform experiments that I had to do.
Another cool thing you can do with fourier transforms is to make the output beam a very clean gaussian as opposed to having sidesplash or whatever I think you guys called it, but that requires higher precision devices. You lose a bit of power doing this though.
Anyway I've searched the forum and such and I think this is the most appropriate place to post this.
I'd like to reconduct some of the experiments out lined in my university optics course (which I bombed extremely badly)
I've crafted a laser driver before (basically a power supply whose outputs go straight to a current source circuit) and had it hooked up to a diode and had it work. My current problem is I need to get lenses. Specifically, larger diameter lenses. They don't need to be special lenses or anything but they do need to have a focal length in the 50mm - 200mm range. Their diameters should be like 3" - 4" at least. I need them in order to diverge the beam and the re-collimate it at a different beam width. I am thinking specifically of the fourier transform experiments that I had to do.
Another cool thing you can do with fourier transforms is to make the output beam a very clean gaussian as opposed to having sidesplash or whatever I think you guys called it, but that requires higher precision devices. You lose a bit of power doing this though.
