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I remember doing a U shaped 3 tube folded-cavity 20 yrs ago, alignment is a nightmare without special mounts and a super stable table.

The ThorLabs graph above is sample based, according to the graph its sampling every .1 sec. Useful for tracking power stability, but not power slope.

It depends upon how much current the DAC is capable of producing. Just like a parallel resister network, the voltage across the resistors remains the same, and the current is divided. There is a certain amount of current required and if the division drops the current too low the system won't...

Not 100% sure, as I don't have OD8, but how much power do you think is reflected off the little bits of dust that allow you to see a beam normally? I can see the beam from my .9mw green HeNe in a dark room. jbtm, your glasses are fine for the wavelength of these diodes as they fall within the...

Re: 445nm A130 Lens Comparisons! lol, stupid me disassembled my aixiz 405 thinking the supplied lens would work best. :yabbem: Now I can't reassemble it correctly.:cryyy:

Just because the diodes can handle 1w, there is no real reason to drive them that high. Personally, the diodes I ordered will probably be operated in the 200-300mw range. I didn't get them for the power, I ordered them for the wavelength. With OD8 goggles you wouldn't see the beam, but the...

High power diode and TEC will drain a battery extremely fast.

Re: ROUND 4 - CHEAP 445nm 5.6mm (true-blue) diode group buy. money sent

Re: ROUND 4 - CHEAP 445nm 5.6mm (true-blue) diode group buy. I'll pay as soon as I get home, can't access paypal from work.

Re: ROUND 4 - CHEAP 445nm 5.6mm (true-blue) diode group buy. Put me down for 2 more. I will put the diode from GB #2 in some kind of host, these will be used 1 for my projector and 1 as a backup.

Re: ROUND 2 SOLD!! Awaiting payment - CHEAP 445nm diodes group buy As soon as he gets the projector and some time to remove everything safely.

Re: ROUND 2 SOLD!! Awaiting payment - CHEAP 445nm diodes group buy money sent

Re: ROUND 2 - CHEAP 445nm diodes group buy Count me in for 1 please.

Re: Aixiz 15mw 532nm I bought one of the 50mw versions for my scanner, been using it for 6 months off and on. Output was 103mw as supplied, but the original driver had a lot of cold solder joints that were broken when I got it. A little soldering repair and it worked fine, but I only used it...

Try this. Not really a test pattern, but will show analog modulation.

Re: 300mW of green for $125 shipped!!!!!!!!!!!!! AH, thx. Missed the link.

Re: 300mW of green for $125 shipped!!!!!!!!!!!!! Is it really TEC stabilized, no mention in the ad.

Re: Perceptual brighness mW power? Kinda depends upon what you want. If you plan on beamshows, 405 will never show well unless you use a lot of smoke. If you are planning on graphics, there is a cheat you can do to give you a 'poormans' blue. If you project your 405 on a sheet of bleached...

The last picture is from the "scooter" show, paused to show the open circles. Otherwise, 90% of the shows I have look great.

This is what I get now. I still can't seem to get blanking correct. I may have some crosstalk issues. I plan to start changing my signal wires to shielded cables. Still waiting for my 405 dichro. so violet circle didn't show for some reason This has been my biggest issue, anytime...