EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement Nos. 33- 303035, 33-66536, 33-35609, 33-31442, 33-21878 and 2-96838 of Coherent, Inc. on Forms S-8 of our report dated October 29, 1996 appearing in this Annual Report on Form 10-K of Coherent, Inc. for the year ended September 28, 1996. DELOITTE & TOUCHE LLP San Jose, California December 23, 1996 81