title: Study of resonant excitation of infrared surface second harmonic at the GaAs-Al interface.
abstract: By using a tunable TEA CO(2) 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 chi(2), 5.9 x 10(-7) esu, agrees well with other measurements.
authors.affiliation: Institute of Physics, Academia Sinica, Beijing, China.
authors.forename: C
authors.initials: C
authors.lastname: Zhenghao
authors.forename: C
authors.initials: C
authors.lastname: Dafu
authors.forename: L
authors.initials: L
authors.lastname: Huibin
authors.forename: Z
authors.initials: Z
authors.lastname: Yueliang