Exhibit 23

                    Consent of Independent Public Accountants
                    -----------------------------------------

        As independent public accountants, we hereby consent to the
    incorporation by reference of our reports dated February 17, 1998,
    included in or incorporated by reference into Thermo Optek Corporation's
    Annual Report on Form 10-K for the year ended January 3, 1998, into the
    Company's previously filed Registration Statements as follows:
    Registration Statement No. 333-13757 on Form S-8, Registration Statement
    No. 333-13759 on Form S-8, and Registration Statement No. 333-13761 on
    Form S-8.



                                                     Arthur Andersen LLP



    Boston, Massachusetts
    March 18, 1998