baharini
0
- Joined
- Jun 26, 2010
- Messages
- 67
- Points
- 8
Hey all,
This is another "build" that I put together
It is incredibly simple, and is far cheaper than a real DPSS yellow laser.
BEAMSHOTS (The camera really doesn't capture the colours correctly, the yellow is even throughout the entire beam and looks way better):
Parts required:
• Red Laser.
• Green Laser.
• (Pass red, reflect green) / (Pass green, reflet red) dichros. These look like a piece of glass with a tint, and only reflect/pass through certain wavelengths.
I used my ~250mW Red Lab laser build for the red laser part. If you haven't seen it yet, click here to check it out!
For the green laser, I used a "10mW" 532nm DPSS green laser pointer held in a vice, running off of a DIY lab power supply @ 3V.
The Dichro was removed from the same DVD burner that I got the red laser diode from. It is pretty small (~0.5cm²) but worked fine. I do not know the exact characteristics of this dichro, but it seems to reflect red/pass green pretty efficiently, however a bit of green is reflected too.
You can purchase a larger dichro from Flaminpyro here: FS: dichros.
The calibration of the dichro and lasers was tricky, partly because of my incredibly cheap "dichro holder" but it was nice and malleable so adjustment was easy, however it slowly shifts over time (which is expected for a piece of card).
The lasers were put on the carpet so it was easy to adjust them too, and they were very stable.
This "build" was a fun learning experience. I got to learn about dichros, and combining lasers. I was amazed that the dichro from the DVD burner actually worked this well. Now I need to think of how to do a more "portable" version :thinking:
(please check out the red lab laser I linked to previously in this post (or click here), It is definately worth a read if you haven't seen it yet)
Thanks for reading, I hope you like it
This is another "build" that I put together
It is incredibly simple, and is far cheaper than a real DPSS yellow laser.
BEAMSHOTS (The camera really doesn't capture the colours correctly, the yellow is even throughout the entire beam and looks way better):
Parts required:
• Red Laser.
• Green Laser.
• (Pass red, reflect green) / (Pass green, reflet red) dichros. These look like a piece of glass with a tint, and only reflect/pass through certain wavelengths.
I used my ~250mW Red Lab laser build for the red laser part. If you haven't seen it yet, click here to check it out!
For the green laser, I used a "10mW" 532nm DPSS green laser pointer held in a vice, running off of a DIY lab power supply @ 3V.
The Dichro was removed from the same DVD burner that I got the red laser diode from. It is pretty small (~0.5cm²) but worked fine. I do not know the exact characteristics of this dichro, but it seems to reflect red/pass green pretty efficiently, however a bit of green is reflected too.
You can purchase a larger dichro from Flaminpyro here: FS: dichros.
The calibration of the dichro and lasers was tricky, partly because of my incredibly cheap "dichro holder" but it was nice and malleable so adjustment was easy, however it slowly shifts over time (which is expected for a piece of card).
The lasers were put on the carpet so it was easy to adjust them too, and they were very stable.
This "build" was a fun learning experience. I got to learn about dichros, and combining lasers. I was amazed that the dichro from the DVD burner actually worked this well. Now I need to think of how to do a more "portable" version :thinking:
(please check out the red lab laser I linked to previously in this post (or click here), It is definately worth a read if you haven't seen it yet
)Thanks for reading, I hope you like it
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