My New 462nm Laser Torch!!!

I just finished my new build using the NDB7675 laser diode! I'm using a custom host by Ehgemus with a V7 adjustable flex drive set to 2.0A. The laser runs on 2x 18650 batteries. I have had this diode sitting around for a month so I am glad to finally make use of it.

Here is a picture of the completed laser:


The beam of this laser is BLUE!




As usual, I am impressed by the host made by Ehgemus. I love his work!


Just a moth enjoying the new laser.



And a beam comparison against a ~1.7W 450nm laser. This picture is straight from the camera, unedited.


All in all a nifty laser diode! This one bridges yet another gap in the wavelengths available to hobbyists.

And finally a PIV plot for this diode:


There will most likely not be a video on this laser.

nice colour. beam comparison is an eye opener!

All I can say is that laser is a true beauty! I am in awe ! Thanks for sharing!

Must resist this wavelength. can anyone tell me 100% these are not just high wavelength binned regular 9mms?

that moth is so cool, did it just show up? drawn to the light I presume, we can all relate

your camera is deceptive, it makes the 450 look like 405 to me. the beam, but not dot.

i want im jelly

Very nice styro, keep up the great work as always

-Alex

Love that baby blue beam. Awesome build too.

Beautiful wavelength styro, more of a visual difference from 450nm than I would have thought.
That 450nm does look quite like 405nm in that pic.

That Ehgemus host looks sweet! Is it a one of a kind made for your build?
Glad you decided to build this one! :beer:

BTW - The butterfly doesn't look too bad either.

Shakenawake said:

can anyone tell me 100% these are not just high wavelength binned regular 9mms?

Click to expand...

I am repeatedly amused by this question.

Who cares? How does the answer matter? If the answer is "yes" would it make 465nm any less 465nm? Would your turn the diode down if you found out that Nichia was binning diodes and pulling these from one singular production line, vs setting out to create these, on their own, independently of other diodes?

It's important to me because I like my lasers to be deliberate, not a fluke. this makes repair easier. say I burn this diode out and can not source a new one? enjoy it while it lasts I suppose, but I guess I don't think that way.

I have heard the wavelength lengthening in binned 445nm diodes is inversly proportional to efficiency, which makes me wonder if these high wavelength but innefficient diodes will suffer any other detriments as a result of being the outliers.

I'm just wierd like that, I wonder about stuff. I'm not saying it's any less 460nm. I just would prefer that it was on purpose, designed as such

Absolutely stunning color :drool: that beam comparison is amazing

+rep for a beautiful laser!

Thanks for the kind words everyone! I finally got to shoot this laser across my yard at night and I am very impressed with the color difference between this and the "regular" 450nm lasers.

Shakenawake said:

that moth is so cool, did it just show up? drawn to the light I presume, we can all relate

your camera is deceptive, it makes the 450 look like 405 to me. the beam, but not dot.

Click to expand...

That is a cecropia silkmoth, they are native to where I live but I actually raised this one.

Yeah the camera does make the 450nm look pretty violet, but there definitely is a large color difference between that laser and the one I just built!

BowtieGuy said:

Beautiful wavelength styro, more of a visual difference from 450nm than I would have thought.
That 450nm does look quite like 405nm in that pic.

That Ehgemus host looks sweet! Is it a one of a kind made for your build?
Glad you decided to build this one! :beer:

BTW - The butterfly doesn't look too bad either.

Click to expand...

I saw Ehgemus make some similar hosts to these so I asked if he could make me something along those lines, and here it is!

Many spectacular things are not made intentionally to be such. People who birth a savant did not conceive them with the intention of birthing a savant. And yet these high performing children oftimes have extraordinary qualities. Having something unique or limited because it was a fluke merely means it is that much more special. The fact that I cannot just replace the diode in my 469nm 1.6W build in the future means that for now I can revel in it and I know that it is not easily replaceable. No, these diodes are not very efficient. BUT the second I ran the numbers and saw how terribly inefficient it was I jumped for joy because I knew I had EXACTLY what I wanted. A low efficiency points to a high wavelength, and the more nanometers over 462nm it was, the better. I am pushing mine like crazy, but I have to accept that if it dies, I may never get another.

I am not sure that my thoughts were all that coherent, but eh, my brain isnt always coherent.

Shakenawake said:

It's important to me because I like my lasers to be deliberate, not a fluke. this makes repair easier. say I burn this diode out and can not source a new one? enjoy it while it lasts I suppose, but I guess I don't think that way.

I have heard the wavelength lengthening in binned 445nm diodes is inversly proportional to efficiency, which makes me wonder if these high wavelength but innefficient diodes will suffer any other detriments as a result of being the outliers.

I'm just wierd like that, I wonder about stuff. I'm not saying it's any less 460nm. I just would prefer that it was on purpose, designed as such

Click to expand...

PS - I completely agree about Ehgemus' work. I am on my 8th host so far this year from him and I love it! He understands exactly what I want when I shoot him an idea, and I love being able to rely on him to fabricate my host visions.

Looouuve this colour Blue! Great Build there Styro, a few of these Diodes getting around now and I guess as long as they keep making 9mm Blues then there will always be some that are High and low. Whether we will always be granted access to them is yet to be seen. They must have been out there all along but maybe Techhood has only just been granted the right to buy them, who knows?
As for the Ehgemus host it does look very well made, that particular one is a little to chunky for my taste but to each his own. In saying this I too have a 462nm Diode Module and driver tucked away waiting, waiting for my custom host from Sinner to arrive in a couple of weeks time so I guess there will be "Another" review using this diode!? It's OK though as I have liked all the reviews so far that I have seen on it in LPF.
See they are becoming "Common" already!:beer:

It's a beautiful color, StyroPyro, as well as the host!

Just finished a PIV plot from data from this diode with a G2 lens. That kink between 1.6A and 1.7A is from letting the diode cool a bit before running the test further, so the data isn't perfect. As you can see, running it a 2A is pushing it a bit.