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https://opg.optica.org/oe/fulltext.cfm?uri=oe-26-11-13985&id=389714 Yeah, they aren't selling anything, it's not good enough. Step in the right direction though.

Is that actually amplified stimulated emission or just amplified spontaneous emission? (expecting ASE because the whole emitter including the side lines is visible as output) As there are 1,65W 525nm diodes available nowadays, one could select a diode to be 530nm for maximum absorption and...

Seen my thread? I already build a 607nm Pr:YLF based laser. https://laserpointerforums.com/threads/class4-607nm-handheld.110810/ The thing is: It wont be possible without background knowledge, its not like you are going to buy a crystal from optogama and use a 445nm laser diode on it. You need...

You know, I am always concerned with modulation speed. That and current ripple is why I would want to go linear after switching. CMC is a way but more complex to integrate but offers advantages, not sure if converters designed for CPUs and stuff like that offer direct CMC, most of them only...

Seems very reasonable. Make a thread about it and just ignore all the hate and silly discussions that somehow always break out here. One could also do 5V in to have lower step-down ratio - possible higher efficiency. A SMPS with 5V will cost the same as a 12V one. I would do DC/DC U source +...

Diodes with 375 and 390nm are available for "cheap" (>500€ for a full module). They are only sm so only a few 100mW. Other solid state lasers can do that but much more expensive (often >5000€).

Shorter wavelengths are much better for small holes with high aspect ratios. At 1064nm you are looking at roughly 100um depth (0,1mm) for a 12u hole (0,012mm). That’s for the best possible laser. Not sure what the beam parameters of the cheap Lasertree units is. Even an M² of 2 will reduce...

Just forget that idea. The modes of MM diodes are way too close to split them with reasonable efficiency. And you will end up loosing so much power that a SM diode makes way more sense. It really depends, a MM diode can certainly work depending on your requirements of hole size to depth and...

That's not really what he is talking about. More like q-switched or mode locked. Lasers like that can produce puls trains that consist of very short pulses. For solid state lasers, this almost always means: lower CW output power but much higher instantaneous power. Like a 1W CW laser producing...

@Eidetical Yes you are right, however everything pulsed will be very very expensive. You would need 532, 1064 might already be too big of a spot - depending on drill depth. However I would guess that you could also run the 405nm diode pulsed, won't result in higher peak powers but might be...

Just a G8 won’t work. You will end up with a random spot diameter and an elyptical spot. You need a lens system to form the beam to acceptable levels. Expansion of the slow axis is needed to get the spot round first. Then a telescope to expand the beam to get your desired focal spot size and...

Focus size isnt a problem. Its more "how deep do you want to drill" and "which color does your material have". Often laser diodes dont burn holes that are round. Most diodes are elyptical in shape while some even aproach a rectangle. There is also the problem of focusing. Which results in a...

Linear is more often used in show lasers so its more economy of scale related.

Interestingly, lasertree also offers selected diodes at 530nm and 1,6W. Only with fac as far as I know but it’s easy enough to use and much cheaper than a original nichia diode. They also have selected 470nm diodes.

Just relax guys! I just wanted to know what other unexperienced people come up with in therms of pricing. Everybody in their right mind knows that I (the one that would need to build the actual thing) would be the one actually anouncing and charging a price, so i see no harm here.

I think people don’t get how much time I spend on project like these. Even just anodizing takes an hour of keeping an eye on temperatures and stirring liquids. Not only machining, also programming the toolpaths, making custom tooling to hold the delicate parts. Screwing one up needs to be...

The diodes and drivers only dissipate <2W at full output. That’s less than a Galaxy Note 11 takes while gaming. Having essentially liquid cooling (=blood cooling) helps a lot. Holding the unit in your hand will significantly reduce the temperature of the housing. I run it for like 5 min at...

you forgot a zero

lets offer a selling price :D

After what felt like ages another update: I anodized the housing black. I couldnt decide and i am still debating of making it silver. Its so tiny! I am still far away from finished, just trying out some looks for the menu system, so the display is essentally showing garbage. But it already...