S. E. Ralph, T. G. Ulmer, B. R. Washburn, and C. M. Verber, "Microcavity-enhanced surface-emitted second-harmonic generation for signal processing in the ps and fs regimes,,"
in Ultrafast Phenomena, T. Li, ed.,
Vol. 43 of OSA Trends in Optics and Photonics
(Optical Society of America, 2000), paper MF39.