who wants to tame this?

[planters]

My Chinese is a little weak. How are you reading anything other than the price?

[kecked]

they have the datasheet in English AND I can read a schematic showing the protection device across the diode.

[planters]

OK, thanks.

I looked at the OP and this same data sheet shows the ESD protection as well. Now, the 9mm 445s have an ESD component built in and here there is no interference with modulation. These greens are almost certainly destined for video projectors (or diverted) and they would probably use some kind of low speed modulation of an all diode projector to eliminate the color wheel, so hopefully this means the ESD protection here won't prove to be a problem either.

[andyf97]

This ESD device was covered, discussed and looked at even under a powerful microscope on the 445's; its propriety to Nichia and installed on all 9mm Laser diodes and I guess that this is one of the reasons the 9mm diodes are so resistant to damage.

As I understand from some early tests done today in USA the Green 9mm 1W diodes produce a nicer beam than a 445 and run cooler.

I have some on the way that I got for 600 dollars for testing so unless somebody beats me to it; should be some test results very soon.

Andy

[planters]

Andy,

That seams reasonable. The optical performance is the real unknown here and I hope you are correct that these have higher quality beams than the 445s. I am less interested in whether they can be over driven to 2W for example because they are expensive diodes (they are still a significant investment at $300 each). But, if they can produce high quality beams with the right optics the financial risk is only the initial purchase of the optics. The lenses will not go LED. If these are not as asymmetric as the Mitsu diodes and are more like their 445 brothers then a 4mm aspheric followed by a cylinder pair to square up the near field beam is how I would start. This would probably help minimize the focus and alignment hassle of the 2mm lenses and keep one of the axises within the dimensions of a typical scanner without the telescoping that would be required with say an 8mm collimator. But, its your show. Just keep us informed.

Once you nail down the optics then I would like to aim at the thermal performance. With Dave's copper mounts and multistage TEC cooling, I will look at the wavelength shift (I suspect quite small) efficiency and power output as they cool.

[andyf97]

Andy,

That seams reasonable. The optical performance is the real unknown here and I hope you are correct that these have higher quality beams than the 445s.

I hope so too; I spent a long time on the 9mm 445s to end up with a super beam spec, so given what I am hearing from my friend over in your country I should be able to do my usual lens magic and deliver one super quality beam with the green. But who knows. Have to wait and see.

[steve-o]

I have some on the way that I got for 600 dollars for testing so unless somebody beats me to it; should be some test results very soon.
Andy

Yeah! Way to go Andy!
Kudos and Cheers

Looking forward to hearing your results.

[planters]

Andy,

Just keep us informed this time.

[badger1666]

Look forward to seeing what happens ,shame we dont know more about andys lens magic

[steve-o]

I can feel another "Grail" thread coming on ..