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Old 10-03-2016, 08:53 AM #1
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Default Help is my 611.8 HENE on it's death bed.

It always had a blue color behind the orange and i read the laser faq.

I closed the shutter till i cold just see it and looked at it with a 1000linesper mm grating.


I saw lots of colors just like the first one here http://www.repairfaq.org/sam/henedcol.gif


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Old 10-03-2016, 08:57 AM #2
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Default Re: Help is my 611.8 HENE on it's death bed.

Can you take an image of your HeNe. It may help us get an idea.
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Old 10-03-2016, 09:36 AM #3
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Default Re: Help is my 611.8 HENE on it's death bed.

I think it might just be from the bore as it comes out several inches I read that on the faq ( only can see that with my blue googles) and i saw a rainbow of wls from violet to many reds I mean I must of got 12 colors on the grating. it's a tube so there's no way to see the cavity. also read this to on the laser faq Blue light from the electrical discharge will also pass out of the mirrors as a diffuse glow when running. No, you don't have a blue HeNe laser!


It was always there so I think I'm fine.
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~30mw newish 532nm Pen
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50mw 660nm DX pen
"5mw" overspec IQS Blu-ray does around 50mw
Spartan 589nm 50mw likely higher no lpm to test but skin feels warm.
3.107 watt 445nm zero laser
473nm labby peak at 34 mw
808nm over a watt from a 400mw green that came loose and lost the crystal set
980nm with weak cyan line focousable
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Old 10-03-2016, 03:06 PM #4
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Default Re: Help is my 611.8 HENE on it's death bed.

Quote:
Originally Posted by joeyss View Post

It was always there so I think I'm fine.

Yes, you're fine by the sounds of it. The mirrors will pass blue, so you'll have a blue glow coming from the aperture - just a result of the discharge in the tube. To test the health you need to look at the bare tube and the colour of the discharge down the bore.
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