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Re: New Nichia 9mm 1W 520nm diode Any news on this? I mean, the 520nm diodes? :beer:

Re: Mini Review of Laserglow Sol IIRC There are sources on lpf how to measure divergence using an online calc... All you need is a ruler and a way to measure longer distances (~16ft) Search lpf you'd like to learn and try it. It will turn out to divergence in mRad. :beer:

Now thats what I call a *VERY* merry christmas... :bowdown: :crackup:

Re: Mini Review of Laserglow Sol @kilter Its a great laser you got uh. Being an eye safe green, makes it kinda rare and cool to own... @cyparagon Dont be so harsh on kilter, cyp. I understand he's very happy with it, so he wants to show it... not measure every mA @ tailcap and divergence...

Merry Christmas LPF... All members :thanks: :wave:

Get an IR filter, glue it inside, and you will have a real <5mW green laser pen, which is hard to find for cheap.

Maybe the emitter runs hotter (because of the die submount, diode base and the heatsink itself :P), so the wavelength drifts to higher values.

If your switch is double poled (like the common 110-220v switches, called "chave H-H" in portuguese), you can even insert a "medium power" setting (add one more resistor). For the cap parallel to the LD, I always use a 100nF one, soldered close to the LD pins... :beer:

Re: New Nichia 9mm 1W 520nm diode You mean't Retina desintegrator :crackup: :beer:

Re: New Nichia 9mm 1W 520nm diode @andyf97 Not really. That only means that the same company (nichia) manufactures both diodes... @ixfd64 Sure they are. Look the big divergence... :beer:

Re: New Nichia 9mm 1W 520nm diode Thats divergence in degrees (º). The green diode is 11º parallel divergence and 46º perpendicular divergence. :beer:

I just sent techhood another request on the full datasheet. I asked about a price drop (he did it before), lets see what happens.... ;) $1K seems pretty harsh atm

Re: CNC laser engraver - project approved I'm taking some important decisions on this and I'd like to share here. I'll be working with my teammate only. The college will not be involved anymore (they would source the parts, but they would keep the project :tsk:). The router should be no...

Hey hello The 532nm color you want isnt diode based. Its obtained by DPSS system. So you cant buy 532nm diodes, only modules. Modules have all the internals needed for 532nm light generation. for a handheld green, id suggest you to choose another color, specially if this is your first DIY...

Re: New Nichia 9mm 1W 520nm diode If you do some calculations, you'll see that the efficiency has tripled compared to the PL520s. So probably it affected voltage drops too... :beer: Its an engineering sample. Maybe thats why it has so many "lines". Its not optimized yet, even lifetime is...

beam divergence is 11ºx46º. For reference, the 9mm 445nm are 14ºx44º. Yesterday, there was 10 available. They are going fast... (and the price was raised ;) its $1K now)

Re: New Nichia 9mm 1W 520nm diode I asked Robinson (techhood) about the diode datasheet and he said he will email it to me (full version)... Oh right. offtopic: Hmm who cares about 1W of green anyways. heres the 1W 473nm diode. :beer: edit: 12ºx48º, worst divergence ever

Re: New Nichia 9mm 1W 520nm diode according to this, it should be 6.23 times stronger than a 3W 450nm laser. Or 2.33 times stronger than a 5W 660nm laser. Hmm. I'm wondering whats the divergence. And what power we could push them at. Damnit, its rated at 1W and its 6 times stronger than a 3W...

Carbon resistor. 1/4 watt ones.

Direct driving will only kill the diode if you source enough voltage, so a high If will flow when the diode is hot and bang :) If you direct drive a a140 on a li-ion, it will barely output 500mW. I mean that, if you short the LD during operation, and it does not have the appropriate capacitor...