Share Email Print

Optical Engineering

Cascading low-quality beam shapers to improve overall performance
Author(s): Gabor Erdei; Gabor Szarvas; Emoeke Loerincz; Peter I. Richter
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

One of the most important characteristics of a Gaussian-to- uniform beam shaping system is the ratio of the entrance pupil radius to the spot size of the input Gaussian beam, i.e., its 1/e2 intensity radius. This parameter, called the beam shaping power, must be increased above a certain value, otherwise the homogeneity of the output beam decreases (due to Fresnel diffraction on the entrance pupil), and the power transmission of the optical system drops. We develop a new method for achieving a sufficiently large beam shaping power without the need for a special fabrication technology or design technique. The basic idea of our method is to place a number of low beam shaping power subsystems one after the other into a cascade, to obtain a system of increased beam shaping power. The subsystems can be constructed from simple elements (e.g., spherical lenses), which are easy to design and fabricate. We describe our method, develop simple formulas for its theoretical discussion, and present a design example to demonstrate its operation.

Paper Details

Date Published: 1 March 2002
PDF: 8 pages
Opt. Eng. 41(3) doi: 10.1117/1.1431968
Published in: Optical Engineering Volume 41, Issue 3
Show Author Affiliations
Gabor Erdei, Budapest Univ. of Technology and Economics (Hungary)
Gabor Szarvas, Budapest Univ. of Technology and Economics (Hungary)
Emoeke Loerincz, Budapest Univ. of Technology and Economics (Hungary)
Peter I. Richter, Budapest Univ. of Technology and Economics (Hungary)

© SPIE. Terms of Use
Back to Top