Tight focusing of wavefronts with piecewise quasi-constant phase

Alexander Normatov; Boris Spektor; Joseph Shamir

doi:10.1117/1.3081093

1 February 2009 Tight focusing of wavefronts with piecewise quasi-constant phase

Alexander Normatov, Boris Spektor, Joseph Shamir

Author Affiliations +

Optical Engineering, Vol. 48, Issue 2, 028001 (February 2009). https://doi.org/10.1117/1.3081093

Abstract

The Richards-Wolf approach to analyze tight focusing by high-numerical-aperture aplanatic optical systems was designed to treat incident waves having a planar (or negligibly curved) wavefront at the entrance pupil. In this paper we extend the approach to incorporate also wavefronts with piecewise quasi-constant phase. The evaluation of the field distribution in the vicinity of the geometrical focus is accomplished by linear superposition of the contributions from all the segments with quasi-constant phase. As an application example, a tightly focused optical field is evaluated for a π-phase-step-modulated incident wavefront.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Alexander Normatov, Boris Spektor, and Joseph Shamir "Tight focusing of wavefronts with piecewise quasi-constant phase," Optical Engineering 48(2), 028001 (1 February 2009). https://doi.org/10.1117/1.3081093

Published: 1 February 2009

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