Uniphase Laser

How do i get a He-Ne laser to work?

I have a LASER DRIVE He-Ne laser power supply and a UNIPHASE He-Ne laser. The power supply has this information on it: input: 21-31 VDC

output:1100-1500 VDC @ 3.5 MA

The model number is 103-23

My laser is a model 1007-0726

I also have two little mounts that hold the laser, and they appear to have metal contacts on them that conduct electricity to the contacts on the laser. If anyone out there knows how to get this thing to work, it would be much appreciated! Thanks in advance for your help.

Your laser should have a little pigtail coming out of it with a connector that will match the connector on your power supply. From your description, this sounds like it might not be the case. Does your "laser" look like this:

http://www.laserlabs.com/index.php?main_page=product_info&cPath=72&products_id=313

or like this:

http://www.jdsu.com/product-literature/hnlh1100_ds_cl_ae_012506.pdf

If it's the latter you just need to connect the laser to the supply and connect the laser supply to a power supply. If it's a bare tube, there are some other parts you need to get it to work. So you should read the laser faq links below on building a laser from scratch essentially.

Assuming you have an entire head and not a bare tube, Anyway, you're going to need a *linear* 24V DC power supply. Here is the Laser Drive website:

http://www.laserdrive.com/hene.cfm?pl=3,11

although they don't list a Model 103 so it is kind of hard to say how large a 24V supply you will need in terms of current. (They don't list this for any of their supplies so you'll have to call them. A place like Radio Shack will sell you a wall-wart DC power supply for maybe $15). Older, used He-Ne's can be finicky when starting, once you get it connected and the power supply is operating, it might take a few minutes to actually start lasing. If it doesn't start, here's a good site for finding out specific things to try

http://www.repairfaq.org/sam/laserfaq.htm

with particular details about troubleshooting here:

http://www.repairfaq.org/sam/laserhtr.htm#htrhtt0

A brief word of warning, that tube isn't an eye hazard unless you stare into it for a while, but *any* He-Ne can give you a fairly nasty shock. Don't turn the power supply on without a laser hooked up to it, don't disconnect a running laser head from the power supply, don't connect a laser head to an energized power supply, and give the power supply a few seconds to discharge completely once you turn it off before you disconnect the laser head.

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