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You are a perfectionist. :D That's great. I've just seen it again and read the YT description. Again well done. However this heatsink stuff should be obvious for viewer from LPF IMO, but good you mentioned that for others not being familiar. Also with LPF links it can attract some new members...

OMG! What have you done? Now they can track you. :crackup: Do not worry, if you put just country or EU as I have, it is completely fine. Not much info is needed. Only for the others to see. You know when asking for some help it is easier, since someone close to you can send you components much...

^^^This. BTW: I'm glad this thread topic is about lasers right now. I'm always affraid to open threads like this or religion thread popping out recently. Too much things to say and discuss. :D And you know how it turns out often - hours a day spent on LPF - not a bad thing, but still so many...

That was not even the purpose of the video to get into technical view too much IMO, Alaskan. Anyway it is a great video containing all needed. Well done. I just added out of the box view for others to see why fins are very important in such a host. That's all. :)

That is a really nice host, Tero. I like it a lot. And as Alaskan mentioned in the video, great it has fins for heatsinking. Let's look at geometry: Volume is a^3 and surface is a^2 (for simplicity cube is used for illustration), you see? With higher a, the volume rises much higher than...

Well, that would be interesting, still maybe not what you want (RGB laser?). Also 532 nm is not diode but DPSS frequency doubled laser. And if it is green heavy (following human color perception) it will be quite expensive. Anyway check this: Original post...

It is due to variable resistance of the diode as it heats. Look for some time/current characteristics. It tries to draw more at peak, but driver is limited, therefore it behaves as a short circuit for a while. The driver tries to charge the output capacitor on the regulator, but this capacitor...

Ah, in that case it still might be overload at diode peak (after 5-10 seconds). Diodes are semiconductors, with higher temperature, there is higher current (opposite relation to conductors). And paste should be better IMO, however I'm not sure if it is not electrically conductive, in that case...

Did you test it with diode or dummy load when measuring current? Likely it is thermal protection, still I would expect complete shut down in this case and function recovery as soon as it is cool enough. Anyway I'm not sure if actual power switch (amplifier or MOSFET) is integrated in the IC or...

In my time zone it is almost noon now. :D

Yeah, might be the case. And are you sure you draw current within the specs? Aren't you overloading it with diode peak current? It might be also overload regulation.

22 amps and 4 V DC? 88 W of power? Well, physics is going to limit you a lot here, thick cables, not really small driver/power source. As advised above - I would think about use of more buck converters in parallel. However they are not going to be really small for such currents. I would also add...

I think you are not wrong, Alaskan. Just crossing sun should be ok aka in normal wear and tear (also depends on what's your altitude - in mountains you have stronger UV, if it is noon, morning or evening, etc.). How could there be pictures with sun on them anyway? If you use some long focal...

0.39 mW max - that should be ok than. But you know some cameras might be damaged by direct sunlight hit. Can I damage my camera by pointing it at the sun? :: Digital Photo Secrets I just missed somehow 0.39 mW. And in case of night vision cameras I woulud not be surprised they have lower...

This. ^^^ In DPSS there are some crystals and further stuff which could be damaged or misaligned. The best way would be change the module IMO. They should be cheap. Just be sure you have correctly rated driver and power supply.

Not too much, but seeing these flashes, the pixels in the center of the flashes might get enough stress to reduce their lifetime IMO. Even low powered laser can do some harm under certain conditions. Depends on collimation as well. For example beam "focussed to infinity" and camera as well to...

This ^^^^^ BTW: I still think the sensor had to suffer when getting direct hits (even of low power). :cool:

In data sheet here: http://www.cnilaser.com/PDF/MGL-III-532.pdf They say 532+-1 nm, so this should indicate it (however this is very roughly - there will be alignment issues and piece to piece variable optical cavity quality tolerance included). Check here for more...

Yes, that is what I'm about to do. :D I just wanted to use LPF links, but once I really cannot fit it I'll use kind of tinyurl service.

Steam is invisible, people often think of seeing steam, but they see little droplets of water instead. https://en.m.wikipedia.org/wiki/Steam Water is overall fascinating. Awesome post. I'll go through it later on more deeply. Thanks. Rep+. Edit: After reading your post, thanks again. A lot...