FT: Coherent Red He-Ne Helium Neon w/PSU

I have a Coherent CR90-20TM Red Helium Neon tube and power supply.

It is an older model, but it lases perfectly. Optics are in perfect condition.

Im not exactly sure of the output rating, but I think its a 10mw tube.

It was an alignment laser for my Coherent 60w CO2, which is now dead.

It included fully adjustable mounts.

The power supply operates on 12v , and its fairly current hungry. It has an inlet/outlet for liquid cooling the power supply. It doesnt get very hot, it was to help keep cabinet temp down I think.


I would really like to trade for a 445nm 1+ watt diode. However, I would entertain other offers.

Also, since Im new here, with no rep yet, I would be willing to ship first (US only) as long as you have some decent rep. or are a well established member.


Below are some pics of the system in operation. The shot of the spot on my hand is blooming bad on my cam, the spot is actually very small at that distance, maybe 1mm at most.

Man, I'd trade you a 445 1W + diode for this in a heart beat - but I'm in Canada, and I also don't have an easy 12V power source (other than my bench PSU)

rhd said:

Man, I'd trade you a 445 1W + diode for this in a heart beat - but I'm in Canada, and I also don't have an easy 12V power source (other than my bench PSU)

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AC/DC Charger for APD WA-24C12U 12V 2A Replace 24W | eBay

RHD, I would not mind shipping to Canada. Its not the hassle everyone makes it out to be.

As far as a power source, 3x 3.7v lithium cells in series will power it fine. Thats what I used. I would recommend at least 18650's since the driver is kinda power hungry.

But it might be a cost issue, no?

I would have to imagine that shipping this to Canada is going to cost more than a 445 diode would be to simply buy, no?

rhd said:

But it might be a cost issue, no?

I would have to imagine that shipping this to Canada is going to cost more than a 445 diode would be to simply buy, no?

Click to expand...

You may be right, at least to get it there in any reasonable amount of time anyway. If you are certainly interested, you can PM me your address and I can see what it would cost.

PM'd!