505nm and 480nm diode RESULTS

[10fenny]

Alright this could be promising! Weird they didn't show current range either.. unless I missed it

 

[paul1598419]

Good news everyone - the odicforce page lists a driver (the one I bought) that looks identical to the ebay listing. They say 3-5V input

Variable Boost Driver Board for 515nm and 520nm Green Laser Diodes - OdicForce

That looks identical to the one I have coming from China for $7.98. If it is the same one, it is far cheaper from the Chinese. I know BowtieGuy found a linear driver that is made for a case positive diode. I looked at it and it looks perfect for use with the case positive 505nm diodes.

 

[badboybilly]

That looks identical to the one I have coming from China for $7.98. If it is the same one, it is far cheaper from the Chinese. I know BowtieGuy found a linear driver that is made for a case positive diode. I looked at it and it looks perfect for use with the case positive 505nm diodes.

Do you mind posting the link to this case positive linear driver, I could just change the batterie orientation of the build and use any driver with this 505 diode, as long as the host is the positive feed, Just like these 589 and 594 lasers, This always confuses me happy to admit, Even with the small RGB module I built with 3 Flexdrives, I wasn't sure if all the 5.6mm diodes were case neutral or not,

 

[paul1598419]

I don't have a link for it, but it is called a Blitz Linear Driver and is on Survival Laser's site. I think you can find it from that.

If not, PM BowtieGuy. He has the link to it.

 

[BowtieGuy]

Billy, here is the link to the driver that Paul mentioned, it's called the "Blitz-linear driver", it's available at Survival Laser.

 

[Singlemode Laser]

@ SingleMode
Do you know which of the three iterations of the 505nm diode you got? They have a number micro-printed around the diode's window that can be read with some magnification. They all start with SB.....
Depending on the one you got, it could be closer to 503nm or 510nm. That could make a difference if you are trying to get a specific WL out of it.

I got the ones, that are closer to 503nm :san:

 

[badboybilly]

Cool thanks guys I know the blitz they have been around for ages, Ok all good!

 

[paul1598419]

I got the ones, that are closer to 503nm :san:

Another reason I asked is that of the two that are ~503nm depending on which you have, the pin out is different as one is case neutral and the other is case positive. If you have the SB1573N91, it is case positive. If you have the SB1473N91, it is case neutral.

 

[Singlemode Laser]

Another reason I asked is that of the two that are ~503nm depending on which you have, the pin out is different as one is case neutral and the other is case positive. If you have the SB1573N91, it is case positive. If you have the SB1473N91, it is case neutral.

Thanks for the information! I have the case positive ones and the seller was so nice, that he included the pin-out in the package . Otherwise, this could be a quick dead for the diode.

 

[Dr.Laser]

Another reason I asked is that of the two that are ~503nm depending on which you have, the pin out is different as one is case neutral and the other is case positive. If you have the SB1573N91, it is case positive. If you have the SB1473N91, it is case neutral.

He got 2 of the 3 I offered for sale.

 

[paul1598419]

Oh, okay. Just didn't want you to find out the hard way. Got them from Dr.Laser. That was also good as he knows the difference.

 

[NightExplorer96]

I really do hope Sharp comes out with more diodes, along with Nichia & OSRAM. Pretty much everything is covered in the visible spectrum now apart from 530nm-620nm diode wise. Still nothing in that range, expect for DPSS and gas.

-Alex

 

[Singlemode Laser]

My results so far:

I could easily push the 503,0nm diode to 499,5nm with just 8% feedback from a grating. Next week I will recieve a grating with a higher feedback at this wavelenght so +/- ~ 7nm should be no problem.

I will show my results later, when I acomplished my goal. Maybe this could be interesting for some users here.

Singlemode

 

[paul1598419]

That s very cool, Singlemode. I understand how it's done, just haven't seen anyone here actually do it. If you can force it down to 496nm, that will really be something. I imagine the power is severely limited when you do this. What are you getting out? 30 mW? Less?

Edit: BTW, I got the PTL5-488 diode today. Will be testing it soon. Need to know what the owner wants in the way of a module.

 

[Singlemode Laser]

That s very cool, Singlemode. I understand how it's done, just haven't seen anyone here actually do it.

If there is some interest in this, I could post some publications, other resourses and pictures of my own test setup, when I reached my goal.

If you can force it down to 496nm, that will really be something. I imagine the power is severely limited when you do this. What are you getting out? 30 mW? Less?

496nm is also my goal, because from 496nm to 498nm some atomic transitions are located, that are interesting to me. The output power depends on the amount of feedback back into the diode. 30% feedback means 30% less usable power.


Later I will measure the power for different currents to see how far I can push the diode without damage. Since I use active temperature stabilization for my laser diodes I usually operate at ~ 2x the spected current rating, sometimes more, depending on the diode.


Singlemode

 

[paul1598419]

I expected that you use Peltier TEC cooling. I would be interested in your scientific publications and photos. I might be able to use some of your research for my own purposes. :thanks: