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Old 06-16-2015, 05:42 PM #1
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Default Help on 5 Milliwatt Blue (no Violet no Multimode)

I can't seem to find any legit PL-450 Osram diodes. Every time I search it ends up being the PL-450B.

Does anyone know where I can obtain a 80mw PL-450 Osram 450nm diode?
It's power curve shows it will lase at about 2.4mw so this would be perfect if i could find one.

The PL-450B is a 120mw diode and I'm being advised that it starts lasing at 15mw. The power chart graph appears to show it will lase lower but I'd take DTR's word for it... and that makes me sad.

I want Blue, not violet. I want Single Mode not Multi-mode. I need it to be Eye Safe.

I was also advised I can get a red filter for the PL-450B and possibly get it down to <5mw. What filter? and Where to obtain it? How to mount it?

I would like it in a module. I should have mentioned this also. I would prefer not to solder to the diode on my first build with a ~35.00 diode.

I found Osram PL450 450nm 80mW TO38S on a few sites as diode only and I may just have to bite the bullet and try my hand at it.
I absolutely love the ~450nm range.


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Old 06-16-2015, 05:47 PM #2
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Default Re: Help on 5 Milliwatt Blue (no Violet no Multimode)

Here's a PL450:
OSRAM PL 450 450nm 50 80mW Blue Laser Diode Single Mode in TO38 Icut Package | eBay
It's from laserlands, they are quite trustworthy.
Also, 5mW of blue won't be very visible. I would think that 15mW (from the PL450B) is just fine. People will say that anything above 5mW requires safety glasses, but unless you are a total idiot you will not hurt yourself with 15mW.
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Old 06-16-2015, 06:07 PM #3
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Default Re: Help on 5 Milliwatt Blue (no Violet no Multimode)

Not sure that the PL450 will actually lase any lower than the PL450B but one thing to note the PL450 was discontinued a while ago. Unless they are sitting on some old new stock there is a good chance if you order a PL450 they will send a PL450B. Sellers will on diodes like this keep the listings for search rank and selling history but deliver the newer revision. I see it with this and the PLTB450 as the PLTB450B is the only one rolling out of the factory currently. If you do I would contact first and make sure they have some new old stock of the PL450 laying around. They are actually discontinuing the PL450B and now it will be the PLP450 which is the same power single mode but in a 5.6mm can. I just got the first tester batch of them in yesterday.
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Old 07-04-2015, 04:34 PM #4
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Default Re: Help on 5 Milliwatt Blue (no Violet no Multimode)

LP 450nm 1-80 these lasers have been tested to be at or below 5 or 1mw depending on which one you get. they are single mode and laserbtb is a reliable company.
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Old 07-04-2015, 06:20 PM #5
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Quote:
Originally Posted by micheal rosen View Post
LP 450nm 1-80 these lasers have been tested to be at or below 5 or 1mw depending on which one you get. they are single mode and laserbtb is a reliable company.
I found an osram pl-450 80mw diode. I think I can run it low enough.
Thanks though.
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Old 07-04-2015, 06:41 PM #6
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Default Re: Help on 5 Milliwatt Blue (no Violet no Multimode)

Laserman121 is selling these: NDB7242E 445nm diodes..
They have great divergence and are low power.
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Old 07-05-2015, 04:30 AM #7
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Default Re: Help on 5 Milliwatt Blue (no Violet no Multimode)

Matt's actually right, those might be better suited to what you're looking for. Plus that divergence
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Old 07-05-2015, 04:58 AM #8
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That does look like an awesome suggestion. Thank you. I already bought the osram pl450 but if that doesn't work out I'll go this route.
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