Abstract The diffractive-phase axicon can convert the Gaussian-profile beam into axial uniform intensity distribution with long focal depth and high lateral resolution. Two types of phase-retardation functions for the nonuniform-illuminating axicon are derived in terms of the ray tracing and the geometrical law of energy conservation. Based on the general theory of the amplitude-phase retrieval in optical system and the iteration algorithm, the optimization design of the phase distribution of the diffractive-phase axicon can be achieved. The simulation celculations show that the new approach may successfully offer the design of the desired diffractive-phase axicon with long focal depth and high lateral resolution. A comparison of the performances of the holographic axicon with the phase-retardation functions from the geometrical optics prediction and the diffractive-phase axicon designed by the new approach is also presented.
Received: 15 June 1995
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China and supported in part by Grant LWTZ-1298 of the Chinese Academy of Sciences.
Cite this article:
ZHANG GUO-QING (张国庆), DONG BI-ZHEN (董碧珍), YANG GUO-ZHEN (杨国桢), GU BEN-YUAN (顾本源) DESIGN OF DIFFRACTIVE-PHASE AXICON ILLUMINATED BY A GAUSSIAN-PROFILE BEAM 1996 Acta Physica Sinica (Overseas Edition) 5 354
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