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Optical Engineering

Laser beam profiling with extended-image-range techniques
Author(s): R. González-Moreno; Juan Antonio Quiroga; Jose Alonso; Eusebio Bernabeu
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Paper Abstract

A method to enlarge the dynamic range of a CCD-based laser beam profiler is presented. The method is based on extended-image-range techniques. The algorithm that generates the extended-irradiance-range image is described in detail. An equivalent dynamic range and number of bits are defined and computed for the new profiling system. To test the method, experimental measurements of the principal widths of the output beam from a single-mode optical fiber have been made, as well as the Fraunhofer diffraction pattern of a 200-µm pinhole back-illuminated by a HeNe laser.

Paper Details

Date Published: 1 February 2005
PDF: 6 pages
Opt. Eng. 44(2) 023602 doi: 10.1117/1.1840931
Published in: Optical Engineering Volume 44, Issue 2
Show Author Affiliations
R. González-Moreno, Univ. Complutense de Madrid (Spain)
Juan Antonio Quiroga, Univ. Complutense de Madrid (Spain)
Jose Alonso, Univ. Complutense de Madrid (Spain)
Eusebio Bernabeu, Univ. Complutense de Madrid (Spain)


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