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Thread: Old Educational He-Ne

  1. #1
    Join Date
    Jun 2009
    Location
    Mesa, AZ
    Posts
    1,161

    Default Old Educational He-Ne

    Newest arrival from Ukraine is this 1980 LG-209 He-Ne. Only laser I've seen with a periscope on the front, inside the cover. Both mirrors in it seem to be highly reflecting, so I think it's one beam path or the other.

    Click image for larger version. 

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  2. #2
    Join Date
    Mar 2015
    Location
    Cambridgeshire, England
    Posts
    387

    Default

    What's the 6.3V connection on the panel for?

  3. #3
    Join Date
    Nov 2007
    Location
    Scottish Highlands
    Posts
    231

    Default

    6.3v is the normal heater voltage for valves - I don't know whether that is the case here.

  4. #4
    Join Date
    Jul 2005
    Location
    Tampa Florida
    Posts
    493

    Default Dual output

    Looks to be cold cathode to me. Dual beam output Some special application? Looks like it may work?
    Phil Bergeron( AKA 142laser)

  5. #5
    Join Date
    Jun 2009
    Location
    Mesa, AZ
    Posts
    1,161

    Default

    The 6.3v goes through the cathode. It worked before shipment but I haven't tried it yet. The large aluminum tube is at the anode end.

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