Faculté des sciences

High-efficiency continuous surface-relief gratings for two-dimensional array generation

Ehbets, Peter ; Herzig, Hans-Peter ; Prongué, Damien ; Gale, M. T.

In: Optics Letters, 1992, vol. 17, no. 13, p. 908-910

Continuous surface-relief phase for two-dimensional (2-D) array generation have been realized by laser-beam writing lithography. For a 9 x 9 fan-out element, a diffraction efficiency of 94% and a uniformity of better than 8% have been achieved. These are, to our knowledge, the best published results for 2-D surface-relief fan-out elements. Separable and nonseparable solutions for the design of... Plus

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    Summary
    Continuous surface-relief phase for two-dimensional (2-D) array generation have been realized by laser-beam writing lithography. For a 9 x 9 fan-out element, a diffraction efficiency of 94% and a uniformity of better than 8% have been achieved. These are, to our knowledge, the best published results for 2-D surface-relief fan-out elements. Separable and nonseparable solutions for the design of 2-D fan-out elements are discussed.