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FrozenGate by Avery

Sharp 490nm GH04850B2G 55mW Laser Diode






I dint even know these diodes was out i went to dtr website looking at the diodes and see them i was like :drool: i placed an order for 3 while dtr has them :D
 
Good news. I need to test how far it can go but so far the flexdrive will run this diode at 150mA with full regulation(input 2.5V through with no variation in output power 6V on the input) and not sure why I had not tried it before but the same 150mA on the 505nm diodes. I think it will start kicking out above 6.5V if I remember correctly but this is good if you want to try and avoid wavelength shift. by running with other drivers like the nano I had been using on the 505nm diodes which the lowest setting is 275mA.
 
That is good news. What kind of power are you seeing at 150 mA? Just curious. I can't remember what the flexdrive current range is. What is its minimum and maximum? You might want to check if it gets hot at higher currents as the Vf of these diodes is pretty high.
 
There is power testing up in the OP now. :beer:

irhnhm.jpg




It will go all the way down to 65mA. Here is the ranges and you can see the full details on this page.

It should run continuously with any current you would use with this diode.

https://sites.google.com/site/dtrlpf/home/laser-drivers/micro-flexdrive-v5

MicroFlexDrive_V5_manual.pdf-1.png
 
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Hi,
I been using the Flexdrives for the 495's and the 505's they work great and in a small footprint. Cant beat them for single battery builds for the lower power diodes .

Rich:)
 
I power all singlemode diode with the nanodrive @ 275mA even the 505nm without any fail. (and more current for 16x bluray)
 
Hi,
Yes I also like the nano drivers for the lower power diodes , they are great for these both 495's and 505's when they are available.

Rich:)
 
I just ordered DTRs 490/nano module. A couple posts up he said they can be driven via Flexdrive... I may swap out to use a flexdrive at lower 150mA current. I don’t have a spectro to tell otherwise but wouldn’t the more conservative current keep the WL down? Seems to be the case from previous readings.

SGD
 
Shotgundrums said:
I just ordered DTRs 490/nano module. A couple posts up he said they can be driven via Flexdrive... I may swap out to use a flexdrive at lower 150mA current. I don’t have a spectro to tell otherwise but wouldn’t the more conservative current keep the WL down? Seems to be the case from previous readings.

SGD
Click to expand...

The listing says with driver as I was specially non descript as I did not know which way I would be going early yesterday. I will already be pairing them with the Flexdrives set to 150mA. I can go higher current if you want bt seemed everyone's was wanting to stay as close to 488nm as possible and running them higher cna start to push them up some.

I have had this nice little AA host for a while waiting for something special to go in it. This seems a perfect fit.










 
Ok, cool, Then I guess that’s perfect that you paired em with flexdrive..150mA is plenty for me.
That’s a nice little host there. Paired with that diode will make a nice little EDC gem!!
Thx, Jordan
SGD:beer:

DTR said:
The listing says with driver as I was specially non descript as I did not know which way I would be going early yesterday. I will already be pairing them with the Flexdrives set to 150mA. I can go higher current if you want bt seemed everyone's was wanting to stay as close to 488nm as possible and running them higher cna start to push them up some.

I have had this nice little AA host for a while waiting for something special to go in it. This seems a perfect fit.
Click to expand...
 
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I do like the looks of that little host for these baby blue wavelength diodes, nice drive for them.
 
What is the average expected wavelength with 275mA (and good copper cooling) ? Beautiful mini host Jordan ! What is it ?
 
If I get a beautiful cyan it's good for me else if the shift is too important I think to change the SMD resistors on my nanodrive
 
It depends on your diode. If you have a low WL diode, it'll be low, high WL diode be high. Of the 11 measured thus far by us, it's 487-492nm at ~100mA.

Wavelength shift is usually 1nm/200mA until you start getting to the brink of death on these diodes, so it won't have too much of an effect visibly. Probably wouldn't notice unless you compared two directly to each other
 
Cool about 1.x nm more for 275mA is not significant and I get about 120mW it's perfect. 505nm diode is rated 35mW and I get long life (I never killed one) @ 275mA I think it's the same for a 55mW rated diode !
 
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