Abstract
A theoretical study on the use of composite materials with semiconductor quantum dots for phase-matching and/or generation of second harmonic light is presented. Approximate near-resonance susceptibilities of quantum dots are given up to the third order under a DC electric field. Generation and propagation of the near-resonant second harmonic and fundamental fileds through such a material are investigated by ignoring local field effects. We find that the efficiency and stability of frequency doubling process are sensitively dependent on absorption and self-phase-modulation at the harmonic frequency.
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