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Physical Review Letters
The theory of second-harmonic generation (SHG) that is due to quadrupole and magnetic-dipole second-order optical susceptibilities is developed for monochromatic, focused beams of arbitrary transverse mode structure and polarization character. The strength of SHG depends sensitively on the polarization character of the beam. © 1981 Optical Society of America.
C.T. Rettner, J.A. Barker, et al.
Physical Review Letters
D.S. Bethune, M.D. Williams, et al.
The Journal of Chemical Physics
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Surface Review and Letters
W.H. Weinberg, C.B. Mullins, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films