Abstract
It is well known that dielectric spherical microparticles are optical resonators with high quality. For specific ratios x = particle perimeter/wavelength, surface waves are excited that circulate by total internal reflection within the particle and are superimposed to each other phase matched. If such a resonance is excited the amplitude of the electromagnetic field within the particle can be enhanced by orders of magnitude compared to the non-resonant case.
© 2000 IEEE
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