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Hypothetical question, just out of curiosity. When working with laser diodes... should all of the circuitry driving that diode 'all' be 'tuned' to operate at the same wavelength/frequency as the diode's outputted wavelength? IE. If I have a 445nm diode, should my driving circuitry be tuned to...

I might be WAY out of line here, but I'll say something, for whatever it is worth..; You've got yourself a high power laser and a not so trustworthy piece of eye protection. You want to fire your laser, but might not feel safe in doing so, due to your questionable eye protection. Fear not, you...

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I followed your ebay link and now have the beam expander saved in my 'watchlist'. Thanks, again! I've also noticed that you like to experiment with things. Have you ever messed around with 'bench-mounted' DIY beam expanding systems, using various optic lenses? I've nothing against professionally...

Thank you. I'm on it!

Thanks Giannis. "I'll give it a look-see!"

My SMPS is indeed a bit noisy, but not horribly bad. I've seen far, far worse! I'm not so sure that I'd like using my switcher for radio operations, or RF sensitive circuits, however. For general electronic gadgets and tinkering... it seems to work quite well and fulfil my basic needs. Perhaps...

Are laser drivers circuits, and the diodes, themselves, sensitive to 'noise' produced by their input power source? I'm currently using a switching power supply, which is obviously a bit noisy... and now wondering if I would notice any difference, in laser performance, if I went to a linear power...

Good point! I never thought of it that way until you mentioned it. My desire for higher power is so far just trying to get the biggest bang possible, and be able to cover a wide scope of projects, via variable power inputs. With high power, I'll have the option for burning, or I can tone things...

Thanks Julian, I've checked it out and like what I see!

I currently have proper eye protection for my blue laser, and also for my green laser... and I wear the proper set of glasses for the proper wavelength laser that I am working with, however. I'm wanting to play around with RGB, all lasers firing at the same time, all lasers operating at...

I've purchased two diode packages from Dtr's Laser Shop... both of them with G8 lenses. If I'm correct, the G8 has a rather long focal length, which is what I want, however. Just 'what' does the 8 mean? For example. I'm currently having great fun in lighting matches, at ever increasing...

I get what you are saying. I think that the main problem is that he found a good sales-person who saw him coming. It's hard for me to put my concerns on the back burner, but I really have no choice at this point. I truly 'have' done all that I can do! After voicing all of my concerns, numerous...

The welder's output is stated to be between 900nm and 1200nm. I'm not sure why it's output is stated that way. Shouldn't something like this have a 'steady' output regardless of how much power is being used (thin metal power vs. higher power for thicker metals)? I don't get it. Shouldn't my...

Why did I feel that this was 'exactly' where you were wanting to go when you first asked me what country I resided in? I'm not looking to punish my employer. I'm wanting to educate!!!

Take care in what you wish for, and also what you 'THINK' that you actually want! High power lasers are no joke! The basic 'blurbage' of your post tells me that you probably should not be messing around with such things as this... at this time! "How old are you?"

U.S.

I contacted Thor Labs about this. I was told that the 900nm-1200nm wave-length was probably not going to show up via digital camera capabilities. I'm going to try one of their NIR detection cards, tuned for 700nm-1500nm. There's no guarantee that it will effectively work in detecting dangerous...

The Title is MISSLEADING!

A lot of diy LPM's, that I've looked at, are based upon similar designs as presented via your link. It seems as though resolution, at the lower end, is a common issue to be expected in such low cost LPM's. I intend to kick a few things around, including 'that' design. "What the heck?" The...