Recent content by Marco Polo

What is the prevailing 'standard' or favorite? I do like the C6's but they do have a problem - the threads for the retaining ring are paper-thin and prone to just tearing off. Are we still building those or is there a new host in town? That being said the host that Ehgemus built for me many...

Hm, so slightly overdriven? I guess we will see what happens. At any rate, the Ehgemus host shines again!

I actually just placed an order for the Sharp 488nm :D Please set to rated current only, no need for overdrive. I really appreciate it!

Are any of the singlemode 638 or thereabouts diodes available, or an ETA on when they might be?

Do you have any gamma diodes? I'd like to disintegrate a few things, kthx 🤣🤣

I'm in the market for a replacement laser diode since I finally have money for it, but I have no idea if DTR Laser Shop is still in business. The website is still up but it's a bit unclear what is still in stock, or if DTR is still in business. Anyone know?

Anybody remember that? Fantastic group buy that was, and I still have all but one of the lasers I got through that. Still alive and well are: The 808nm 2W, 650nm 300mW multimode red, 52mW 520nm first generation green diode, 80mW 450nm blue. Also the blue pen laser, it still works but the...

Subject says it, does anyone have the link to this? The youtube account name was "Dick Head". It was a really funny video. It was posted here on LPF but I can't find it now. :confused:

This is a necro-post but just saw this thread and figured would be worth it to remind everyone that most standard safety glasses won't protect against injury from most of these DPSS greens due to passing the IR beam that is superimposed on the green beam. Only exceptions are if the laser...

I have a PL450 on a Flexdrive set to 300mA and I want to pot it down a bit because 300mA is really overdriving it a bit and I'd like to turn that down. Which way do I turn the pot? I assume I'm ok to adjust it with a diode in place, with the battery removed? My PL520 went LED the other day...

I remember "anode" and "cathode" like this: Cathode "kicks off" electrons (the "c" sounds like "k" and "kathode" is the German spelling). To kick off electrons, the cathode must be negative. Anode "accepts" electrons (both start with "a"). To accept electrons, the anode must be positive. It...

That should 'just' be a matter of adapting existing image sensor design to have >3 color 'cells' per pixel and adjusting their sensitivity to whatever color ranges/channels they want. We would need an encoding standard for it, also probably adapted from HDMI or something. I think selling it in...

I noticed a co-worker had a cheapie DPSS green laser. We work in a factory and the air is a bit hazy so even with the bright lighting the beam was clearly visible. I thought, "cool! he has a laser!" and asked him about it. The conversation that followed made me want to take it straight off...

I'm still here, and I haven't forgotten about you. I just got a new job that pays actual, real money, so I hope to get back into the thick of things soon. Who is the current go-to host maker? Is DTR still around?

Glad to hear it. Yeah, those high-wattage diodes pull the battery voltage down pretty hard when the cell is running out of energy. No need to be sorry about worrying. I know that feeling very well, when it comes to the lasers we love.