Modal dispersion phase matching

Fig. 8. An approach to increasing the overlap integral via modal dispersion phase-matching. The sign of the nonlinearity d(y) is reversed at the same point as the TM1(2co) field. The solid lines show the nonlinearity for TM0(a>)— TM ft)).

Fig. 12. SHG figure of merit r reported in poled-polymer devices using quasi-phase matching (QPM) and modal dispersion phase matching (MDPM)...

FIGURE 14 (a) Tuning curve for modal dispersion phase-matched SHG in a 3-mm-long DANS channel waveguide. The acceptance bandwidth (full width at half-maximum, FWHM) is 4.0 nm. (b) Narrowing of the FWHM acceptance bandwidth versus the sample length L (data and theoretical fit) [26]. 

Jager, M., Stegeman, G. I., Flipse, M. C., Diemeer, M., and Mohlmann, G., Modal dispersion phase matching over 7 mm length in overdamped polymeric channel waveguides, Appl. Phys. Lett., 69, 4139-4141 (1996). 

Rikken, G. L. J. A., Seppen, C. J. E., Staring, E. G. J., and Venhuizen, A. H. J., Efficient modal dispersion phase-matched frequency doubling in poled polymer waveguides, Appl. Phys. Lett., 62, 2483-2485 (1993). 

Fig.4. Schematic representation of the different common phase-matching techniques in the k space representation. (ADM) anomalous dispersion (WBM) waveguide birefringence (MD) modal dispersion (QPM) quasi-phase-matching (C) Cerenkov and (CP) counter propagating Cerenkov...

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