Abstract

Laser-induced processes on conventional and phase-conjugated surfaces are investigated theoretically. Resonance fluorescence of two-level atoms on smooth and rough surfaces are reviewed. The new phenomenon of a radiative dipole at a phase-conjugated surface (PCS), in which the lifetime of the dipole can be virtually infinite under certain conditions, is examined. A PCS originates from the interference of two laser beams incident upon an absorbing layer, and this effect is discussed in terms of a phenomenological model and a hydrodynamic theory in which laser-induced periodic structure and the PCS reflectivity are analyzed. Finally, practical applications of these new phenomena occurring on PCS are discussed.

© 1987 Optical Society of America

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