George Jogy, Seihgal Renuka, Oak S M, Mehendale S C
Raja Ramanna Centre for Advanced Technology, Indore, India 452 013.
Appl Opt. 2009 Nov 10;48(32):6202-6. doi: 10.1364/AO.48.006202.
An analysis of the increase in the beam-propagation factor, M2, 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 M2 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.
