Help me decide what diode/module to put in my MX900 build.

[paul1598419]

That was stated in the data sheet. I just wasn't sure if it was the right data sheet.

 

[RedCowboy]

I measured the focused line from a NUBM07 with the GBall removed and a 3 element lens installed, at 15 feet that focused line is 15mm long, that's 1.5 cm or 5/8 of an inch long.

I had hopped that new diode might be better or at least as good, but with a G2 and cylindrical correction it could be fixed into a good beam, I also prefer having the protective window. But the 07 makes twice as wide of a line as a M-140 and a NUBM44 makes 3 times as long of a line as a m-140.
At 15 feet with a 3 element a M-140 is 5/16, the NUBM07 is 5/8, and the NUBM44 is 7/8-15/16 .

Understand that the 3 element along with having a 5.3mm rear focal length compared to the G2's 2.39mm rear focal length also clips the ends of the raw output bar.
For instance a NUBM44 with a 3 element at 15 feet makes a 7/8-15/16 long line but with a G2 makes a 2 inch long line, but that ratio of difference may not be the same with a different diode. But I digress, the NUBM07 appears to have lower divergence than this new diode, but you have to remove the GBall to make use of it with a 3 element and it has to be kept free of contaminants.
Here's an old video I made, I said 15 but it's 14feet 2 inches to the edge of my washing machine where I set the lasers, if I remember to set them back 10 inches then it's 15 but starting out I didn't always do that, nut it's not a big deal, the new 2.6w 265nm appears to be much more divergent if it was focused correctly.

 

[GSS]

The difference between the NUBM44 and NUBM07 is very noticeable, if you want to burn the 44 has the power, but that bright blue color of diodes like the 7675 and NUBM07 is remarkable and the 7675 is sturdy but not as strong, I think it has better divergence that the de-canned 07, anyone know?

I am pretty sure it does, hopefully the 2.6w rated upgrade will have decent divergence more like a 140/7875 but with that wonderful 465-470nm color and keeping the protective can/window is a plus.
If I wasn't spending all my extra money on other things right now I would want to know what the beam profile of the 7675 upgrade looks like, it's rated at 2.6w rather than 1.4w . It could be a NUBM07 in a can, but the power number falls in between, I am hopeful the divergence will be good, well compared to the 07 and 44.

Brand New Nichia 465nm 470nm 2 6W 2600mW Pure Blue Laser Diode 1pcs | eBay

So is this NUBM07 the only true aqua that DTR sells.
I guess I could go to DTR himself to ask

 

[RedCowboy]

There's the 7675 and the M-462. The 07 has an amazing color, I just seem to do better with a can/window to keep contaminants out.

 

[GSS]

There's the 7675 and the M-462. The 07 has an amazing color, I just seem to do better with a can/window to keep contaminants out.

The price isn't bad on the 7675 and M462 but it seems you kinda have to "luck out" if that makes any sense and get an inefficient one to get the higher WL.
You can though see a real difference towards a more skyblue with these?

RB by now you know this thread is a bit hi jacked my friend! but its all for the good!

 

[paul1598419]

Though the 7675 is a lower power diode, it has been shown to be able to be driven harder, up to 2.4 Amps, and give more of a wavelength sift. I have one myself that I haven't gotten around to building yet, but got it on eBay in an auction for $47.00. This diode is always up for auction, so if you don't mind waiting, it could be the cheaper of it or the M462. I think these are the three that are in the 462nm to 465nm wavelength range. The 07 is decanned, so you may have problems with it if anything ever get into the bare diode. I hope I've been able to give you enough information to decide what you want to do. Good luck, buddy.

 

[RB astro]

Hi Andrew, first of all, good luck on your 1st build! :yh:
I personally would go with the NUBM07E 465nm. IMO, it's one of the best wavelengths available, especially if you're looking in the blue/green region.
It is hopefully going to be one of my next builds.

Whatever you decide to go with, we'll be looking forward to some of your great photos and beam shots!

Thanks Jeff !
I'll be taking photos for sure.

My opinion, food for thought ? ( also like your signature )!!---------edit,forgot to wish you the best on your build whichever you decide !!

Thank you Bob I appreciate that.

https://sites.google.com/site/dtrlpf/home/diodes/nubm07e-465nm-laser-diode
Maybe this at 4.5a. Thats a lot of heatsink.

NUBM07E If you want a blue.. and if you want a green just do another NDG7475 or NUGM01T but beam expand it this round for some difference in builds.

Good luck! Plenty of heat sink for any diode you could want.. so wouldn't want to put any real low power in it when any host/hs could hold it.

Yes Yes Yes go for that pure aqua blue with at least 4W for your next new WL

The difference between the NUBM44 and NUBM07 is very noticeable

So is this NUBM07 the only true aqua that DTR sells.
I guess I could go to DTR himself to ask

The 07 has an amazing color, I just seem to do better with a can/window to keep contaminants out.

Well, great info guys, thanks.
I'm leaning towards the NUBM07 with a 3 element lens.

Will this be ok to put in the build?

NUBM07E 465nm Laser Diode​

[FONT=verdana, sans-serif]

In 12mm Copper Module​

W/3.5A SXD Driver​

7-12V 4A+ Input​

​

[/FONT]

If you want a bright blue try this new diode and report on the beam specs, it should be a bright blue like the NUBM07 but with possibly better divergence.
Brand New Nichia 465nm 470nm 2 6W 2600mW Pure Blue Laser Diode 1pcs | eBay

Thanks Red but I don't have the experience or tools to press my own diode yet, but that looks interesting though.
:yh:

RB by now you know this thread is a bit hi jacked my friend! but its all for the good!

Yeah I don't mind Pete, I'm learning as I read all these replies.
:beer:

The 07 is decanned, so you may have problems with it if anything ever get into the bare diode. I hope I've been able to give you enough information to decide what you want to do. Good luck, buddy.

Paul, thank you.
Yes I intend to be very careful with the de-canned.

I appreciate everyone's thoughts and ideas.
Many thanks guys.
I'll keep you posted.

:beer:

 

[GSS]

So RB, what diode are you thinking on?:crackup:

 

[RB astro]

Pete :crackup:

 

[dubious speculation]

The price isn't bad on the 7675 and M462 but it seems you kinda have to "luck out" if that makes any sense and get an inefficient one to get the higher WL.
You can though see a real difference towards a more skyblue with these?

It is very tempting to go the M462 route considering the $50 price tag! Although as most people have described already the difference in wavelength and perceived brightness would be night and day compared to the NUBM07 when over-driven.

Well, great info guys, thanks.
I'm leaning towards the NUBM07 with a 3 element lens.

Members have reported great results with a G7 lens coupled with the SANWU 3X beam expander. Slightly more power than a 3 element lens and better divergence! Although definitely a more expensive option.

Bring on that beautiful cyan blue! This wavelength is still on my to-do list

 

[GSS]

It is very tempting to go the M462 route considering the $50 price tag! Although as most people have described already the difference in wavelength and perceived brightness would be night and day compared to the NUBM07 when over-driven.



Members have reported great results with a G7 lens coupled with the SANWU 3X beam expander. Slightly more power than a 3 element lens and better divergence! Although definitely a more expensive option.

Bring on that beautiful cyan blue! This wavelength is still on my to-do list

Yup very tempting like said but the luck of odds of getting a higher WL just isn't high enough. Members seem to have a big difference in sensitivty on what colors they see.
Got to go with the jump to the 07 instead of a few nm that some might not even notice..

 

[RB astro]

Ordered:

NUBM07E 465nm Laser Diode​

[FONT=verdana, sans-serif]

In 12mm Copper Module​

W/3.5A SXD Driver​

7-12V 4A+ Input​

​

Wish me luck.​

Stay tuned....​

​

op:​

[/FONT]

 

[GSS]

Ordered:

NUBM07E 465nm Laser Diode​

[FONT=verdana, sans-serif]

In 12mm Copper Module​

W/3.5A SXD Driver​

7-12V 4A+ Input​

​

Wish me luck.​

Stay tuned....​

​

op:​

[/FONT]

Yeah, now I can borrow it when after you build it:shhh:

 

[RB astro]

Yeah, now I can borrow it when after you build it:shhh:

hehehe, any time buddy, you know that.... :beer:

 

[dden4012]

Did you get it with an external driver or in the module?

 

[RB astro]

Did you get it with an external driver or in the module?

In the module.

:yh: