Compact optical system for pulse-to-pulse laser beam quality measurement and applications in laser machining

Robert W. Lambert, Rodolphe Cortés-Martínez, Andrew J. Waddie, Jonathan D. Shephard, Mohammad R. Taghizadeh, Alan H. Greenaway, Duncan P. Hand

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Fluctuations in beam quality (M2) have been observed on a pulse-to-pulse basis from an industrial Nd:YAG laser. This Was achieved with a compact multiplane imaging method incorporating quadratically distorted diffraction gratings, which enabled simultaneous imaging of nine planes on a single CCD array. With this system, we measured across a range of beam qualities with an associated error (in M2 variation) of the order of 0.7%. Application of the system to fiber-optic beam delivery and laser drilling is demonstrated. © 2004 Optical Society of America.

Original languageEnglish
Pages (from-to)5037-5046
Number of pages10
JournalApplied Optics
Volume43
Issue number26
DOIs
Publication statusPublished - 10 Sep 2004

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