A four-layer waveguide structure for second-harmonic generation is described in which phase matching is obtained through modal dispersion. It is shown that, for realistic material parameters, it should be possible to obtain a frequency-doubling bandwidth of greater than 100 nm by proper choice of layer thicknesses.
© 1993 Optical Society of America
Original Manuscript: April 12, 1993
Published: November 15, 1993
G. L. J. A. Rikken, "Wavelength-uncritical second-harmonic generation in multilayer waveguides," Opt. Lett. 18, 1916-1918 (1993)