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Strange 12x diode output

xStatiCa

xStatiCa

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12x 405nm blu-ray diode on Vimeo

The laser is being rolled on something. No focus adaptor/lens attached so it is the raw output of the closed can diode.

Is this something to be concerned about? It looks like the diode window is loose and moves around and there are artifacts in the diode window. Is the diode window(lens) cracked/chipped and the artifacts are pieces of glass?
 





daguin

daguin

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It appears that the diode window is broken loose. It also has crap all over it. The loose window is not a major concern. There are no cracks or edges interfering with the laser light. There is some discussion about whether the die will degrade more quickly, but this is usually not a problem in hobby use.

Trying to get the crap cleaned off of the window will be a problem. You cannot really use the "normal" techniques to clean a loose window.

Peace,
dave
 
Asherz

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Didn't Flaminpyro do a great job at cleaning diode windows? Maybe he could take a look at it for you if you PM him, it will cost a little though because cleaning the windows is delicate work.
 
Eudaimonium

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Perhaps they should install Linux in diodes from now on, all the Windows problems are getting out of hand here.

Anyhow, it appears as it all the pieces are moving so they are not fried on the diode window, I think that a very gently blow with compressed air (that bulb thingy) will help at least to some degree.
But cleaning off the rest will be impossible as the window is broken loose, stated by Dave here.

Perhaps you dropped the laser or just layed it roughly on a table lately?
If 100% no, then maybe the window is not broken loose at all...
 
HIMNL9

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I've found in the past that the only safe way for solve the problem with a loss window is ..... decan the diode .....

Just for not left that window rattling inside the can, with the risk to hit too much times the chip facet and damage it (and, anyway, it's no more sealed, so .....)
 
Meatball

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It will need to be de-canned if the window IS loose. But regardless of the window, you've got crap inside the cap somehow. This can do damage to the facet on the die if you leave like this for long. De-canning the diode WILL expose it to oxygen which will allow air borne particles to slowly degrade the facet, and make it more vulnerable to other kinds of damage. PM Flaminpyro about it. I think he can de-can it for you for about $10. He'll put lots of time into it to make sure gets cleaned up and working again.
 
xStatiCa

xStatiCa

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Thanks for all the feedback/opinions on this so far guys. All input is welcome. I do realize a lot of this is up to interpretation.

The laser was noticed in this condition within the first day of getting the laser(around 2 to 3 weeks ago) I just didn't know the real cause of it until recently. The concern that the stuff on the window combined with a loose window might be an issue was not until recently. It was never dropped and it was kept in a felt type cloth to keep the host from getting scratched and such after I got it. I take good care of my lasers.

When I first got the laser I noticed that the big artifacts were in the laser beam output. As I tried to focus the laser the stuff in the output would move so I was not concerned with it and assumed it was the focus adapter lense so I was not concerned with it. I notified the seller about the big artifact in the beam output within a few days of getting it just to make sure and was going to send pics but after reading on the forum I thought that artifacts in the output is not a big deal. I didn't realize the moving of the artifacts was something to be concerned about. Just yesterday the laser was opened (focus adapter taken off) to see the raw diode output and then it was obvious that the problem was the diode window being loose that caused the artifacts to move and not the focus adapter lens.

I am just trying to determine if the laser is good to use as is for hobby use or if it is a bad diode to use in it's current condition because it's life will be reduced.

Again. The laser works just fine right now. It burns very fast and when the beam is focused to a point you of course can not tell any issues with the laser. The beam doesn't change it's outer shape, get distorted, or anything like that. If you never unfocus the adapter to see the big image you would not know anything was different from my previous laser I owned without the big artifact.
 
Flaminpyro

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Howdy Xstatica to bad about your 12x diodes window but all is not lost it can be de-caned and that will help with your beam pattern and it will be a bit stronger in power. as long as you run it with a lens in place you should not get comtaiments on the die. I will put a squirt of nitrogen in when I close it up to help keep the oxygen out so try and leave the lens in when you get it back, of course only if you send it to me for de-canning will this happen ;)
Have a good day !
Pyro...



xStatiCa said:
Thanks for all the feedback/opinions on this so far guys. All input is welcome. I do realize a lot of this is up to interpretation.

The laser was noticed in this condition within the first day of getting the laser(around 2 to 3 weeks ago) I just didn't know the real cause of it until recently. The concern that the stuff on the window combined with a loose window might be an issue was not until recently. It was never dropped and it was kept in a felt type cloth to keep the host from getting scratched and such after I got it. I take good care of my lasers.

When I first got the laser I noticed that the big artifacts were in the laser beam output. As I tried to focus the laser the stuff in the output would move so I was not concerned with it and assumed it was the focus adapter lense so I was not concerned with it. I notified the seller about the big artifact in the beam output within a few days of getting it just to make sure and was going to send pics but after reading on the forum I thought that artifacts in the output is not a big deal. I didn't realize the moving of the artifacts was something to be concerned about. Just yesterday the laser was opened (focus adapter taken off) to see the raw diode output and then it was obvious that the problem was the diode window being loose that caused the artifacts to move and not the focus adapter lens.

I am just trying to determine if the laser is good to use as is for hobby use or if it is a bad diode to use in it's current condition because it's life will be reduced.

Again. The laser works just fine right now. It burns very fast and when the beam is focused to a point you of course can not tell any issues with the laser. The beam doesn't change it's outer shape, get distorted, or anything like that. If you never unfocus the adapter to see the big image you would not know anything was different from my previous laser I owned without the big artifact.
Click to expand...
 
xStatiCa

xStatiCa

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Thanks again for the info. It is much appreciated.

Well unfortunately this is more complicated than what was stated. The laser was purchased from Yobresal and then I sold it to marihuano. He noticed the diode window issue and is trying to find out if it is something to be concerned about or not. I assumed it was fine based on the info I stated above and the fact that the laser works perfectly besides the artifacts. It wasn't until he took the focus adapter off that we realized the real issue. We are just trying to find out if it is an issue that will compromise the laser or not.

If it is an issue then this could get complicated. Until we know for sure if it is something to be concerned about then we won't know what actions to start discussing.
 
yobresal

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I am not sure how or when this happened to the window as I test every laser before I send it out and specifically mention anything that may be odd or wrong. In most cases reducing the price significantly. As requested by Xstatica I am going to take responsibility for this, refund him, and add this to the list of reasons I am not building lasers.
 
Eudaimonium

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xXAxHillbillyXx said:
LOL:crackup:
Click to expand...
Well, at least somebody finally noticed...

@Yobresal, what a bad luck my man, I have upmost respekt for you and if I had your laser like that, I could not request a refund of any kind, nor accept it. It's not your fault if any laser component has a birth defect.

That are the risks when building lasers of cutting edge, you never actually know for certain, especially with those 12x diodes since we don't even know safe/safe-pushing current.
 
yobresal

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I will attempt to fasten the window to the can. This will ensure the window does not touch the die although I think that if it were going to it would have already by now. I am also curious if there might be two windows in this diode. One sealing the can and another stuck below it in the can. It seems to me that if the window were moving around loosely the beam properties would be affected in a major way. I will know exactly what is going on when I receive this laser back. This is still somewhat of a mystery to me.
 
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