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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 26 — Sep. 10, 2004
  • pp: 5037–5046

Compact Optical System for Pulse-to-Pulse Laser Beam Quality Measurement and Applications in Laser Machining

Robert W. Lambert, Rodolpho Cortés-Martínez, Andrew J. Waddie, Jonathan D. Shephard, Mohammad R. Taghizadeh, Alan H. Greenaway, and Duncan P. Hand  »View Author Affiliations


Applied Optics, Vol. 43, Issue 26, pp. 5037-5046 (2004)
http://dx.doi.org/10.1364/AO.43.005037


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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

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1970) Diffraction and gratings : Diffractive optics
(110.4190) Imaging systems : Multiple imaging
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3390) Lasers and laser optics : Laser materials processing

Citation
Robert W. Lambert, Rodolpho Cortés-Martínez, Andrew J. Waddie, Jonathan D. Shephard, Mohammad R. Taghizadeh, Alan H. Greenaway, and Duncan P. Hand, "Compact Optical System for Pulse-to-Pulse Laser Beam Quality Measurement and Applications in Laser Machining," Appl. Opt. 43, 5037-5046 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-26-5037

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