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    Photos of Zygo Helium-Neon Lasers

    These are various stabilized HeNe lasers from Zygo, a maker or interferometer-based metrology products and systems.

    Like HP (now Agilent), Zygo also manufactures what is called a "Two-Frequency HeNe Laser" for use in their interferometry based measurement and calibration systems. All except the 7705 use an HeNe laser tube of conventional design with an AOM to generate the two frequencies exactly 20 MHz apart. (The 7705 uses Zeeman-split technology like the HP/Agilent lasers.) The Axiom 2/20 was the first of a series of lasers that evolved through the 7701 and then 7702. All three of these are functionally similar with minor changes in implementation between the Axiom 2/20 and 7701 - both of which use a discrete control PCB, followed by the 7702 with its firmware-based control PCB. Since the split/REF frequency is 20 MHz - much higher than any HP/Agilent laser - the Zygo laser rae not at all compatible with them electronically. But except for the higher frequency optical receiver, interferometer optics of Zygo systems are very similar. Much more information on these lasers can be found in the chapter: Commercial Stabilized HeNe Lasers of Sam's Laser FAQ.



    Zygo Axiom 2/20 Helium-Neon Laser

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    Zygo 7701 Helium-Neon Laser

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    Zygo 7702 Helium-Neon Laser

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    Zygo 7705 Helium-Neon Laser

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    Zygo 7712 Helium-Neon Laser

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    Sam's Laser FAQ, Copyright © 1994-2017, Samuel M. Goldwasser, All Rights Reserved.
    I may be contacted via the
    Sci.Electronics.Repair FAQ Email Links Page.