The even-phase diffractive optical element that produces four equi-intense diffraction orders with maximum efficiency is derived. A fullwave electromagnetic analysis is performed to study the behavior of the device in the resonance domain. Moreover, such full-wave analysis agrees with the scalar prediction in the limit of very large values of the grating period, Design curves for the transmission efficiency as a function of the grating period and of the incidence angle are presented, The effects of quantization of the phase profile to a discrete number of phase levels are considered, The optimization of a simple structure with only four phase levels is reported, showing good results in terms of diffraction efficiency and angular bandwidth.

Borghi, R., Frezza, F., Pajewski, L., Santarsiero, M., Schettini, G. (2002). Optimum Even-Phase Four-Beam Multiplier. OPTICAL ENGINEERING, 41, 2736-2742 [10.1117/1.1510536].

Optimum Even-Phase Four-Beam Multiplier

PAJEWSKI, LARA;SANTARSIERO, Massimo;SCHETTINI, Giuseppe
2002-01-01

Abstract

The even-phase diffractive optical element that produces four equi-intense diffraction orders with maximum efficiency is derived. A fullwave electromagnetic analysis is performed to study the behavior of the device in the resonance domain. Moreover, such full-wave analysis agrees with the scalar prediction in the limit of very large values of the grating period, Design curves for the transmission efficiency as a function of the grating period and of the incidence angle are presented, The effects of quantization of the phase profile to a discrete number of phase levels are considered, The optimization of a simple structure with only four phase levels is reported, showing good results in terms of diffraction efficiency and angular bandwidth.
2002
Borghi, R., Frezza, F., Pajewski, L., Santarsiero, M., Schettini, G. (2002). Optimum Even-Phase Four-Beam Multiplier. OPTICAL ENGINEERING, 41, 2736-2742 [10.1117/1.1510536].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/115838
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