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Osram PL450 450nm 80mW power chart

Blord

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I am posting my data on the Osram PL450 450nm 80mW TO38S

My diode is mounted in the aluminium module and heat sinked with a big CPU cooler.
Lens is standard acrylic lens and 405nm/445nm G2 lens.

Test equipment:
Bluefan Basic LPM.
DC powersupply YH-305D






I hope this information helps us all learn more about this diode.
 

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GAtkins

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Re: Osram PL450 450nm power chart

Are you direct-driving that diode right off the power supply?

Is it OK to do this for every diode in every case?

Thanks.

Glenn
 

Blord

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Re: Osram PL450 450nm power chart

Yes, the diode is direct driving by the DC power-supply. You have to dial the current knob to zero and short the terminals before hooking up the diode. Works for every diodes. It is a very handy tool for the laser hobbyist.
 

GAtkins

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Re: Osram PL450 450nm power chart

So the PSU essentially acts as the driver to regulate constant current?

Glenn
 

Blord

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Re: Osram PL450 450nm power chart

With the bench PSU you can omit the driver. It acts like a variable driver and power supply in one.


:wave: :wave: :wave: :wave: 1000 posts :wave: :wave: :wave: :wave:
 

GAtkins

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Re: Osram PL450 450nm power chart

Glad to be of help on the 1,000 posts!

Glenn
 
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Re: Osram PL450 450nm power chart

I am posting my data on the Osram PL450 450nm 80mW TO38S

My diode is mounted in the aluminium module and heat sinked with a big CPU cooler.
Lens is standard Acrylic and 405/445 G2

Test equipment:
Bluefan Basic LPM.
DC powersupply YH-305D

I hope this information helps us all learn more about this diode.

This is great info to have for anyone building a blue laser using this doide, thanks!
 

Meatball

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Re: Osram PL450 450nm power chart

Thanks for doing this. Do you have a duty cycle to report? It also helps to know your measurement methods.

Do you let the diode cool down between every data point? Or were all the point taken in < 5mins time?

Was the any active cooling on the heatsink like a fan?

Have you considered making a higher resolution plot to work out some of those noticeable "wiggles"?

Just giving you some ideas. You got a good setup, and proper measurement tools, and I think you've got the ability to go even further!

Nice work!

+1

-Tyler
 

Blord

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Re: Osram PL450 450nm power chart

I didn't took 5min between the readout. It is more like 10sec. I dailed the current to the next step and waited 10sec. Maybe i got sloppy in the last measurement, there is some up and down at some points.
The aluminium heatsink barely heatup during the test. It could be easily cooled passively.
 

Joe Mo

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Re: Osram PL450 450nm power chart

I am posting my data on the Osram PL450 450nm 80mW TO38S

My diode is mounted in the aluminium module and heat sinked with a big CPU cooler.
Lens is standard Acrylic and 405/445 G2

Test equipment:
Bluefan Basic LPM.
DC powersupply YH-305D






I hope this information helps us all learn more about this diode.

Wow I thought you needed a driver because of voltage spikes, so the psu regulates current/voltage? Where did you buy it? I've used them before in highschool engineering class. I need to get me one :)

btw I have the same LPM :)
 
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Blord

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Re: Osram PL450 450nm power chart

I updated the chart with more G2 measurements and with 30sec readout after adjusting the current.

Maybe I should murder the diode to know its limit ? :D
 

Joe Mo

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Re: Osram PL450 450nm power chart

I updated the chart with more G2 measurements and with 30sec readout after adjusting the current.

Maybe I should murder the diode to know its limit ? :D
Did you manually create the graph?
 

Blord

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Re: Osram PL450 450nm power chart

I put the numbers in MS Excel and the software makes a nice graph for me. :)
 

DTR

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Re: Osram PL450 450nm power chart

Thanks for the testing.:beer:

I need to get one of these for a keychain build. If you could squeeze 250mW-300mW out of it that would be sweet. I see you topped it @ 1A. What does the data sheet recommend on these?
 
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