The displacement of a spherical target from the geometric focus of the focusing optic changes the irradiance of the target. A modification of the formalism of J. H. Erkkila [J. H. Erkkila, “Laser light scattering and absorption in dense, spherically symmetric plasmas,” Ph.D thesis, University of California, Report No. UCRI,51914, 1975 (unpublished)] that accounts for this change is necessary to analyze the absorption of laser light by displaced spherical plasmas.
© 1979 Optical Society of America
Ralph A. Cover, "Comment on absorption of focused light by spherical plasmas," J. Opt. Soc. Am. 69, 1186-1187 (1979)