Abstract
A theory is developed which permits calculation of the energy absorbed by aspherical particles of small size under irradiation by double ultrashort laser pulses of specified duration, in the excitation region of surface plasmons (Mie resonances). For particles of oblate or prolate spheroidal shape the dependence of the absorbed energy on the deviation of the particle shape from spherical, the pulse duration, the volume of the particle, and the polarization of the electric field of the laser beam relative to the axis of the revolution of the spheroid is determined. It is shown that, depending on the time delay between the two pulses, the energy absorbed by a particle can be greater or less than the total energy of absorption from two uncorrelated pulses.
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