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Reconstructed ordinary and extraordinary refractive index profiles at a wavelength of for a BBO crystal implanted with ions at a fluence of .
Scanning electron microscope picture (top view) of the BBO ridge waveguide (width of and height of ) fabricated by photolithography and ion sputtering.
(Color online) Wavelength dependence of the second harmonic signal generated in a wide and high ridge waveguide at an input power ; each peak corresponds to a phase-matched interaction between different guided modes.
Calculated dispersion of the effective refractive indices for pump (TM) and second harmonic (TE) modes: the crossing points represent phase-matched interactions between different guided modes leading to the second harmonic maxima shown in Fig. 3.
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