Abstract
Fluctuations in beam quality (M 2) 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 M 2 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
Full Article | PDF ArticleMore Like This
Andreas Kuhn, Paul French, Duncan P. Hand, Ian J. Blewett, Mark Richmond, and Julian D. C. Jones
Appl. Opt. 39(33) 6136-6143 (2000)
Mahlen D. T. Fox, Paul French, Chris Peters, Duncan P. Hand, and Julian D. C. Jones
Appl. Opt. 41(24) 4988-4995 (2002)
Andreas Kuhn, Ian J. Blewett, Duncan P. Hand, and Julian D. C. Jones
Appl. Opt. 39(36) 6754-6760 (2000)