Journal
APPLIED OPTICS
Volume 48, Issue 32, Pages 6202-6206Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.48.006202
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An analysis of the increase in the beam-propagation factor, M-2, of a higher order transverse mode beam caused by quartic phase aberration after transmission through a spherically aberrated lens is reported. The analysis shows that for a given beam size, the increase in the M-2 parameter is less for a higher order transverse mode beam as compared to that for a diffraction limited beam. Experimental results using a multimode laser diode beam show good agreement with the theoretical results. (C) 2009 Optical Society of America
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