Mitsubishi ML520G71...Red Holy Grail or Flashlight Fail ??

[CDBEAM]

Good work Chris !!!! It is really kinda amazing...when you think about it....all of us...from around the world....putting this puzzle together...piece by piece !!!!!.... This is the first POC pic I have seen on a dual !! This project...all reads like a good book !!!! From one " BEAMANIAC " to another !!

BEAM

[andyf97]

Update on the lens: working on another project right now that is kina urgent, so cant put the delivered units to test until I finish.

From what I know so far the optimum lens will be 2mm-2.5mm fl with 0.5NA

I also have a few spare sets of DR Lava correction if anyone is desperate but as usual, I wont sell them any cheaper than Andrew as I had to pay import duties and shipping.

Cheers

Andy

[flyowynd]

hi everybody

I'm following all the great job you were doing on this thread and I've got a (silly?) question: why trying to shape the beam using the correction lenses before the cube and not after.
For a dual setup I could imagine having one diode directly outputing in the cube and the other going through a wave plate before getting in the cube. And after just reshape the beam using the correction lenses.
Maybe I'm missing something (surely) but that would simplify the design.

I will read again all the post just to be sure that hasn't been already discussed.

Cheers

[steve-o]

@steve-o
divergence = 1.09
and heres a couple of pics Attachment 28701Attachment 28702

Very nice, Badger :] Could you put some fog in there, I cant see where the beams are going What is you aperture beam profile? 1.09 is very impressive divergence. I am concluding my testing with the 6388 diode with the 405-G-2 col-lens and should have final results posted up soon. (yes, I know --off topic because this thread is dedicated to the ML520G71 but ..) Btw, I ordered a pair of Lava-lenses last month and no word yet .. are they hard to come by these days?

-edit-
Welcome to PL, Flyowynd.. We must have posted at almost the exact same time :]

[andyf97]

Read the entire thread and then you will be understand better, why and what for and so on.

hi everybody

I'm following all the great job you were doing on this thread and I've got a (silly?) question: why trying to shape the beam using the correction lenses before the cube and not after.
For a dual setup I could imagine having one diode directly outputing in the cube and the other going through a wave plate before getting in the cube. And after just reshape the beam using the correction lenses.
Maybe I'm missing something (surely) but that would simplify the design.

I will read again all the post just to be sure that hasn't been already discussed.

Cheers

[polishedball]

I'll be testing this once my waveplate arrives from Dave. It should work fine as you theory works fine for the 445's with prism's or C-Len's.

It could however be better if you fully rotated the pole and corrected twice as you would have more of a cross instead of a line that may appear as a better dot.

Welcome to the forum.

Perhaps I missed the reason if there is one not too, but i'll be doing it anyhow. FYI te diode I have doing a burn in is only dropped 1mw after 48hours of continuous use at 619mw after optics. As I mentioned when the test ends on sunday or the diode die's i'll get the current I was driving at for everyone. Just didn;t want to start the test over. Stopping to put a meter inline.

hi everybody

I'm following all the great job you were doing on this thread and I've got a (silly?) question: why trying to shape the beam using the correction lenses before the cube and not after.
For a dual setup I could imagine having one diode directly outputing in the cube and the other going through a wave plate before getting in the cube. And after just reshape the beam using the correction lenses.
Maybe I'm missing something (surely) but that would simplify the design.

I will read again all the post just to be sure that hasn't been already discussed.

Cheers

[polishedball]

Btw, I ordered a pair of Lava-lenses last month and no word yet .. are they hard to come by these days?

-edit-
Welcome to PL, Flyowynd.. We must have posted at almost the exact same time :]

Been watching for him in chat to get the answer as I have a set on order as well.

[steve-o]

Been watching for him in chat to get the answer as I have a set on order as well.

Ok, well I don't feel like the Lone Ranger then ..

[steve-o]

Ok-I'm lost .. Badger now has >800mw with a dual diode setup @ ~1 mrad divergence .. who's the winner so far .. ? My HL6388/405G2 setup isn't going to cut that record . . We need a spreadsheet or something ..

[steve-o]

.........................deleted off-topic post ............................................... :/