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Old 06-01-2013, 05:16 PM #33
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Default Re: There is Something "Wrong" With My Beam/Spot





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Old 06-21-2013, 12:55 PM #34
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Default Re: There is Something "Wrong" With My Beam/Spot

Quote:
Originally Posted by iseey0u007 View Post
second picture i am not worried so much about the circle patterns inside the beam...moreso the sliver on the left.


It appears that the diode is not in perfect alignment
You are getting a reflection off of the module
The diode may not have been completely pressed into the module or the module may be "imperfect"
In any event, this is not tragic.
It is not harming the laser
It will not hurt its ability to burn

Peace,
dave
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Old 07-12-2013, 03:13 AM #35
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Default Re: There is Something "Wrong" With My Beam/Spot



I've got another weird dot... It looks like a coil in the middle... Any ideas?
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Old 01-27-2014, 07:20 PM #36
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Default Re: There is Something "Wrong" With My Beam/Spot

My 445 dot looks like your ~30ft at 3ft. Focusing it does not seem to have any effect. Is something wrong with the diode?
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Old 01-28-2014, 01:21 AM #37
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Default Re: There is Something "Wrong" With My Beam/Spot

Maybe post a picture of the raw output of the diode without the lens up on a wall and then with the lens on. The raw picture would tell if there is something with the diode and if that is fine then the other would give an idea if it is the lens.
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Old 01-29-2014, 01:01 AM #38
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Default Re: There is Something "Wrong" With My Beam/Spot

Okay. Here's the spot at ~15 ft.
The purple spots are a camera defect.

And the raw diode output (arm not included):

Last edited by Sta; 01-29-2014 at 01:03 AM.
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Old 01-29-2014, 01:11 AM #39
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Default Re: There is Something "Wrong" With My Beam/Spot

I posted that image in IRC and someone suggested that it was some internal maybe deep cavity reflection.
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Old 01-29-2014, 01:16 AM #40
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Default Re: There is Something "Wrong" With My Beam/Spot

Ok so it is not the lens. Either there is a real problem with the diodes window. Maybe shake it a little listening if it is loose. Or you have some damage to the lasing cavity on the diode. If it is the window you will need to take extraordinary means as in removing the diode from the module and decanning it and if it is the lasing cavity then may it rest in piece.
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Old 01-29-2014, 01:28 AM #41
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Default Re: There is Something "Wrong" With My Beam/Spot

Sta, would it be possible to take a picture of the diode in the module, from both sides?
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Old 01-29-2014, 11:25 AM #42
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Default Re: There is Something "Wrong" With My Beam/Spot

I have tried every means possible to remove the module, but there is a wire connecting it to the host. I am not sure how to get it out.
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Old 05-05-2014, 05:23 AM #43
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Default Re: There is Something "Wrong" With My Beam/Spot

Here is one that I fried, somehow. This is projected without a lens.

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