EXHIBIT 23(b)



                        CONSENT OF INDEPENDENT AUDITORS


To the Board of Directors and Stockholders of
Zygo Corporation:


We consent to incorporation by reference in this Registration Statement on Form
S-3 of Zygo Corporation of our report dated August 6, 1999, relating to the
consolidated balance sheets of Zygo Corporation as of June 30, 1999, and 1998,
and the related consolidated statements of earnings, stockholder' equity and
cash flows for each of the years in the three-year period ended June 30, 1999,
which report is included in the annual report of Zygo Corporation on Form 10-K
for the fiscal year ended June 30, 1999.



/s/ KPMG LLP


Hartford, CT
August 14, 2000