The analytical derivation of the phase profile of a diffractive optical element that produces three equi-intense replicas of an input beam with the maximum efficiency is presented. Such derivation, based on a functional minimization procedure, leads to a closed form far the phase profile and to an efficiency value slightly lower than the predicted theoretical upper bound. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
Gori, F., Santarsiero, M., Vicalvi, S., Borghi, R., Cincotti, G., Di Fabrizio, E., et al. (1998). Analytical derivation of the optimum triplicator. OPTICS COMMUNICATIONS, 157(1-6), 13-16 [10.1016/S0030-4018(98)00518-5].