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Old 06-26-2017, 08:31 PM #65
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Default Re: JDSU 25ML Argon Help

Man, you sure have gotten your share of getting screwed by people trying to off load crap for argon ion lasers. I am so very sorry.


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Old 06-26-2017, 08:53 PM #66
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by Mosc007 View Post
The Saga Continues.

He sent the power supply as said.

The Tube does ignite and has a Plasma. However, It does not lase. It just has a very low pinkish blue output which is not collimated. The Spot gets larger the further away it goes. I have included a pic if anyone has any idea's.

At 1 meter the spot is about 40mm in diameter. The output is very low. The Photo makes it look higher. It's also more pink than the photo shows.

The brightness of the spot does increase and decrease with Tube current. I tested from 4 Amps up to 10 Amps.

Alignment is out, or the cathode is sagging (thus blocking the intracavity beam), or it's lighting down the gas return, or the mirrors are otherwise damaged. Could be gas pressure too but it'd be hard to light/keep running if that were the case.
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Old 06-27-2017, 12:33 AM #67
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by paul1598419 View Post
Man, you sure have gotten your share of getting screwed by people trying to off load crap for argon ion lasers. I am so very sorry.
It seems to be the nature of the beast with these tubes. The tubes are quite old now and it's just very difficult to find a working one.

Other than spending a small fortune its like buying a lottery ticket.

Thanks for your sympathy. I will get lucky one day..
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Old 06-27-2017, 12:39 AM #68
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by diachi View Post
Alignment is out, or the cathode is sagging (thus blocking the intracavity beam), or it's lighting down the gas return, or the mirrors are otherwise damaged. Could be gas pressure too but it'd be hard to light/keep running if that were the case.

There doesn't appear to be any cathode sag. The bore looks clear. It ignited first tick each time i tried. From research i did after posting that pic it sounds like mirror alignment. Sam's guide does have some instructions but being an internal mirror tube they don't usualy go out of alignment. It was very poorly packaged so may have had a heavy knock. There is a slight chance it can be repaired.

Thanks.
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Old 06-27-2017, 02:25 PM #69
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Default Re: JDSU 25ML Argon Help

Hooray

Diachi was absolutely correct.

The Front mirror is out of alignment. Just slightly bending the front of the tube with a screw driver in the correct direction it's lasing. And it seems like a good tube.

I need a more perminant solution. I can't seem to be able to bend it enough to stay in the right position.

For now a "Cable Tie" is working just fine. See the pic.

At 4 amps I can see 2 Lines. At 6 Amps I can see 5 lines. I havn't pushed it harder yet. See the pic with a 1000 line defraction grating.

The pics are taken with a mobile phone so they are not real good.

I have only had a quick play after getting home from work. I will do some more on the weekend.

Any ideas for a perminant fix would be great.
Attached Thumbnails
JDSU 25ML Argon Help-img_20170627_235828.jpg   JDSU 25ML Argon Help-img_20170628_000215.jpg   JDSU 25ML Argon Help-img_20170627_235901.jpg  
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Old 06-27-2017, 08:39 PM #70
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Default Re: JDSU 25ML Argon Help

Theyre just like the helium neon lasers. The mirror mounts can be bent into place with care. It's just relatively difficult without practice...never mind the fact that there's high voltage on it. That makes it a little bit more tricky to do safely.
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Old 06-27-2017, 08:50 PM #71
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by ultimatekaiser View Post
Theyre just like the helium neon lasers. The mirror mounts can be bent into place with care. It's just relatively difficult without practice...never mind the fact that there's high voltage on it. That makes it a little bit more tricky to do safely.

Yeah, some nylon/delrin/some other plastic/insulting rod is a good idea to have for these. Reduces the chance of being shocked, as well as the chance of shorting anything to the case.

Glad to see you got it working.
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Old 06-27-2017, 09:44 PM #72
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by diachi View Post
Yeah, some nylon/delrin/some other plastic/insulting rod is a good idea to have for these. Reduces the chance of being shocked, as well as the chance of shorting anything to the case.

Glad to see you got it working.
Most of the case on these is fibreglass. Only the cowling is metal which i removed. At first i was applying force wedging the screw driver against the case.

The cooling is better without the cowling. Noticeably. Doubles the air intake area. I do have a good 3000 rpm fan on it. Next time I will show how I did the cooling.

The colours from argon are beutifull. Worth all the pain getting there.
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Old 06-27-2017, 09:49 PM #73
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by ultimatekaiser View Post
Theyre just like the helium neon lasers. The mirror mounts can be bent into place with care. It's just relatively difficult without practice...never mind the fact that there's high voltage on it. That makes it a little bit more tricky to do safely.
I was trying to be careful. Didnt want to break it. I did manage to get some perminant bend but not enough. The cable tie does not have much force on it.

At least the Argon only has about 110 vdc on the Anode. But high current available.

I do love the colours in the lines. No doubt i should see more lines when i push it.
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Old 06-27-2017, 09:54 PM #74
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by Mosc007 View Post
I was trying to be careful. Didnt want to break it. I did manage to get some perminant bend but not enough. The cable tie does not have much force on it.

At least the Argon only has about 110 vdc on the Anode. But high current available.

I do love the colours in the lines. No doubt i should see more lines when i push it.

I'd rather deal with 100VAC at 10A than 110VDC at 10A

But yeah... don't want to shock yourself or blow your power supply after all the trouble you've already been through.

Hopefully you can get the alignment adjusted more permanently.
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Old 06-27-2017, 11:38 PM #75
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Default Re: JDSU 25ML Argon Help

CONGRATULATIONS, Mosc007. That is fantastic news. Once you are able to get the mirror aligned properly I wouldn't be surprised to see 6 lines. I got a chuckle out of the way you are holding the mirror in place. Heay, whatever works, right? Very nice inclusion into you gas laser collection. Have you been able to get a power reading yet? I'd suggest Sam's FAQ website, but I know you have already been there. Still there is sooo much of it and you never know where you are going to find that bit of information you are looking for.
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Last edited by paul1598419; 06-27-2017 at 11:38 PM.
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Old 06-27-2017, 11:45 PM #76
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by diachi View Post
I'd rather deal with 100VAC at 10A than 110VDC at 10A
Don't know why? I've had both 100 VDC and 110 VAC and the AC hurts much more. I've had it across both hands and the AC made me see stars! The DC just hurt.
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Old 06-28-2017, 03:50 AM #77
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by paul1598419 View Post
Don't know why? I've had both 100 VDC and 110 VAC and the AC hurts much more. I've had it across both hands and the AC made me see stars! The DC just hurt.
Generaly DC is worse. But at 110 Volts it's not realy that dangerous. One thing that would make 110 VAC worse at this voltage is the Peak voltage is about 150 Volts. That's now starting to get to a dangerous voltage.

In Dry weather and dry hands 110 vac doesn't realy do much at all. slight tingle. I have had it my hands before. We use 240 vac here. That makes you jump when you touch it. Being a licensed Electrician I have had 240 quite a few times.

Generaly 110 vac is not enough to cause fibrilation in the heart. It can make you jump and scare you if moisture aids in conductivity of the skin.


Still, It's always beter to be safe.
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Old 06-28-2017, 03:54 AM #78
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Default Re: JDSU 25ML Argon Help

Quote:
Originally Posted by paul1598419 View Post
CONGRATULATIONS, Mosc007. That is fantastic news. Once you are able to get the mirror aligned properly I wouldn't be surprised to see 6 lines. I got a chuckle out of the way you are holding the mirror in place. Heay, whatever works, right? Very nice inclusion into you gas laser collection. Have you been able to get a power reading yet? I'd suggest Sam's FAQ website, but I know you have already been there. Still there is sooo much of it and you never know where you are going to find that bit of information you are looking for.

I might have to machine something up to hold the tube in the correct place for lasing. Something that is adjustable. Putting a perminant bend seems rather difficult.

Yeah, I wanted to do a pic with the diffraction grating. Pushing the tube with a screw driver and taking a pic at the same time was rather difficult. At the time a cable tie seemed a pretty good way to hold it. And it works quite well.

5 Lines at 6 Amps. I am sure I will see more lines when I push it.

I will do some power readings soon.
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532nm Module in Jayrob host. 90mw
532nm Commercial Laser Module. 80mw
520nm Custom Module. 800mw
520nm Module. S4 Host. NDG7475. 1125mw
505nm Module. S4 Host. Sharp Diode. 103mw
488nm Cyonics 40ML Argon. 6 Lines. 98mw
462nm Module. S4X Host. M462. 2050mw
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Old 06-28-2017, 04:30 AM #79
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Default Re: JDSU 25ML Argon Help

I spent most of my life as an EE. I know the difference between AC and DC. If you think that 110 AC can't hurt you, I'm afraid you are very mistaken. There are confirmed reports of electrocutions with nothing more than 110 AC. It really depends on the amount of current that can be pushed through your body and the contact points. Of course salty moisture as can happen from perspiration makes for better electrical connections to the body.
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405nm Laser Pointer 45mW
405nm C11 700mW
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Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
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Old 06-28-2017, 09:36 AM #80
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Default Re: JDSU 25ML Argon Help

I informed the supplier about the Tube not lasing yesterday. To start with he said he had more tubes and would find a working one for me.

This afternoon I sent him another Email saying with slight mirror force it's lasing and working good.

A few hours later I get an Email saying he has no working tubes and wants this one back. Of course a full refund.

NO WAY MATE, This one may not be perfect. But it works. I think he want's it back cause he doesn't have a working one. Probably thought this one was dead too.

The hour meter is very hard to read. But it may only have 6000 Hours on it.
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532nm Module in Jayrob host. 90mw
532nm Commercial Laser Module. 80mw
520nm Custom Module. 800mw
520nm Module. S4 Host. NDG7475. 1125mw
505nm Module. S4 Host. Sharp Diode. 103mw
488nm Cyonics 40ML Argon. 6 Lines. 98mw
462nm Module. S4X Host. M462. 2050mw
450nm Custom Module. NUBM44. 8300mw Dead
450nm Commercial Engraver Module. 2000mw
445nm Custom Module. M140. 1400mw
405nm Custom Module. 16X BR. 500mw

Last edited by Mosc007; 06-28-2017 at 09:38 AM.
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