Blue Argon-Laser ALC-60X

kilovolt, Wed Mar 18 2009, 06:49PM

Dear All wink

Just wanted to show a project which i did about a year ago. There was a cheap offering from a german laser company for a multiline-argon laser head ALC-60X used and without any warranty. The unit came without power supply, so i had to build one myself. It is a linear circuit for 110V / 10A current regulated. In addition there are a 3V/25A supply for the heater and a 300V supply for the igniter-circuit inside the unit. Building the power supply took me about 1 week.

The laser unit itself:

Argonlaser1

The power supply, almost finished (but without cooling fans):

Argonlaser2

First test-run of the power supply:

Argonlaser3

Beam of the argonlaser and an old HeNe:

Argonlaser4

Argon beam deflected by 2 prism:

Argonlaser5

Argonlaser6

Argonlaser-Beam splitted in all lines with a grating:

Argonlaser8

Beam going through some water-glasses:

Argonlaser9

Greets kilovolt wink
Re: Blue Argon-Laser ALC-60X
..., Wed Mar 18 2009, 06:59PM

Holy bejesus thats awesome!

You should post more details on the power supply, it looks like a pretty impressive project.

Do you know what kind of output power you are getting?

I am glad you got it working smile May it give you many hours of turquoise awesome.
Re: Blue Argon-Laser ALC-60X
kilovolt, Wed Mar 18 2009, 07:38PM

Hello ... smile

Thank you very much for your friendly feedback wink

Do you know what kind of output power you are getting?
Unfortunately, i have no power-level-meter. But due to the fact, that there are 9 lines at about 8.5A tube-current i think it will be at least around 100mW (not sure!).

You should post more details on the power supply, it looks like a pretty impressive project.
Thanks again wink but I have to say that this is a rather simple circuit. It is mainly an operational amplifier for current control and a power stage with 12 bipolar transistors for handling the tube current. The supply for the heater is a toroidal transformer with a selfmade secondary winding.

Some of the main parts of the supply:

Material for the power stage, transistors, heat sinks and caps:

Materialf

The control board with operational amplifier and shunt for measuring the tube current:

Regulationcircuitop

power-board for 110V-supply:

Powercircuit110v

First setup without housing: wink

Firstsetup

Overview of the finished power supply. Unfortunately i have no picture form the board in the middle which is for generating the 300V for the ignitor:

Supplyoverview

Opened laser unit (it's almost the same as the omnichrome 532):

Openedlaserunit

May it give you many hours of turquoise awesome.

Thank you smile

EDIT: For those of you who would like to build this power supply (works also for other Argonlasers in the same power range), I'll post here the schematics. They are not mine, but i'm allowed to post them here...

Link2

Link2

In the second schematic there must be 12 transistor stages in parallel, shown are just three of them.

regards
kilovolt wink



Re: Blue Argon-Laser ALC-60X
kilovolt, Thu Mar 19 2009, 08:24PM

Sorry for double-post smile
An interesting experiment one could do with a multiline argonlaser is the extending of the resonator for selecting specific lines. This can be done with an additional, external mirror. In my case it was a green coated mirror from a defective green HeNe laser. The green laser line has been amplified between laser unit and mirror, while after the mirror only deep blue lines are visible.

Extres1

Extres2

best regards
kilovolt wink
Re: Blue Argon-Laser ALC-60X
kilovolt, Thu Apr 02 2009, 07:54PM

Just had a little argon-laser-session:

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Sorry, I'm too lazy to resize the pictures again... wink

Best regards
kilovolt smile