Abstract

By using a tunable TEA CO2 laser and by grating coupling at the interface of GaAs–Al, we have obtained, for the first time to our knowledge, second-harmonic generation from a resonantly excited infrared surface polariton. The experimental results provided a dispersion relation that compares well with theoretical calculations. The deduced value of χ(2), 5.9 × 10−7 esu, agrees well with other measurements.

© 1983 Optical Society of America

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