Old 06-11-2016, 07:40 AM #1
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Default My first experience with 520nm (and mech mods)

Thanks to Ricker, I got my first direct diode green laser today. I've been around lasers in the lab/educational seting, but I'd never seen the green or 462-470nm blue diodes before.

First impression of it is that it seems to be pretty close to the green of a stoplight. Seems more pure green than 532nm side by side, but I'd say the difference is pretty small. The difference still pretty aparent to me. I don't know that I can pick a favorite green unless I look at an underdriven one towards the 510-515nm area.

Beam was awesome at night, but the mild multimode nature of the PLP520-B1 was still definitely aparent with some splash and some divergence when it hit the clouds. Not nearly as bad as most of the 445's I've experienced though.

I wasn't all that interested in direct diode green for reasons other than reliability, but I think I might like to put a single mode in a leadlight to use more frequently as a pointer.

Seeing one at a really high power must be really impressive, but I think I would still want a 532nm in Class 4 if I get to that point since I like beam quality.

As for the mech mod setup, I've never really paid attention to vape stuff, so I couldn't quite picture the size even though I knew the dimensions. Size turned out perfect for me though. I've loved the look of them since RedCowboy posted about the mech mod setups a few months ago, and I definitely still do. Maybe I'll make some builds in these eventually. I would, however, like to see copper, anodized, or more aggressively finned heatsinks in the future. It'd also be cool to see it bundled with drivers for a JAD (and mech mod) kit.

Photos were too blurry, so I'll reattempt soon.

Edit:

~60mW 532nm on left, and ~70mW 520nm on right. Note the multimode splash from three element lens.

Beamshots not ready.


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Old 06-11-2016, 07:46 AM #2
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Default Re: My first experience with 520nm (and mech mods)

Awesome!

I had the chance to see 520 awhile ago, when I first turned on the laser I thought I had gotten a 532 on accident haha. It was only when I turned on my 532 next to it I could see the color difference between the two. To me, the dots look pretty similar but the beams are where you'll really see a color difference!

-Alex
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Old 06-11-2016, 08:05 AM #3
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Default Re: My first experience with 520nm (and mech mods)

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Originally Posted by Hap View Post
Awesome!

I had the chance to see 520 awhile ago, when I first turned on the laser I thought I had gotten a 532 on accident haha. It was only when I turned on my 532 next to it I could see the color difference between the two. To me, the dots look pretty similar but the beams are where you'll really see a color difference!

-Alex
I'd agree with that. The beams definitely seemed more different than the dots, but I think the power and eye sensitivity wash out the color of the dots. Defocusing the dot made the color difference a lot more aparent to me.
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Old 06-15-2016, 12:03 AM #4
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Default Re: My first experience with 520nm (and mech mods)

Bump, waiting for pics....
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Old 06-15-2016, 12:07 AM #5
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Default Re: My first experience with 520nm (and mech mods)

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Bump, waiting for pics....
I'm out of fog machine fluid, but I might be able to slightly steam up a room to get beamshots. Just about to attempt.

Edit: Nope. Doesn't work well enough. I'll try to do some long exposures if i get time tonight or tomorrow night. No aerosols either.

I'll at least upload a dot comparison.
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510 heatsink, 510 laser mod, 520nm, mech mod, plp520





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