Fig. 1. Variation of SHG conversion efficiency η for an exact solution with the wavelength for different δ. Black, red, blue, and green curves represent δ=0, 0.01, 0.03, and 0.05, respectively.

Fig. 2. Term u2(xn) versus the sequence of domain n for the preassigned wavelengthes under different δ: (a) 0.972, (b) 1.064, and (c) 1.283 μm. Black, red, blue, orange, and green curves represent δ=0, 0.01, 0.03, 0.05, and 0.07, respectively.

Fig. 3. Variation of σ as a function of u2(xn) for λ=0.972  μm. Black curve, standard curve according to Eq. (5); red, blue, green, and orange curves, data for δ=0.01, 0.03, 0.05, and 0.07, respectively.

Fig. 4. Relative tolerance σ with respect to u2(xn) for different FW wavelengthes under 5% random fluctuation. Red curve, data for λ=1.283  μm; blue curve, data for λ=1.064  μm; green curve, data for λ=0.972  μm; black curve, standard curve in accordance with Eq. (5).