Second harmonic generation - Phase Matching

      "Second harmonic generation - Phase Matching" allows you to select the crystal and to calculate all integral parameters: phase-matching angles, phase-matching angular (internal and external) width, phase-matching wavelength width, phase-matching temperature bandwidth, "walk-off" angles, effective nonlinear coefficient, and other.



The indices of refraction and the phase-matching directions for all types of interactions

Fig. 1. The indices of refraction and the phase-matching directions for all types of interactions



All possible phase-matching angles versus of the azimuth angle

Fig. 2. All possible phase-matching angles versus of the azimuth angle



Phase-matching angles versus of the wavelength of fundamental laser radiation

Fig. 3. Phase-matching angles versus of the wavelength of fundamental laser radiation


      All results are presented as the functioanal dependencies from the azimuth angle, wavelength, temperature, etc. For each crystal the presentaion of 21 graph dependenies for different phase-matching parameters are possible.



Phase-matching azimuth angle (XOY plane, NCPM interaction) versus of the fundamental laser radiation wavelength

Fig. 4. Phase-matching azimuth angle (XOY plane, NCPM interaction) versus of the fundamental laser radiation wavelength


      You can calculate the distributions for all the phase-matching widthes.



Phase-matching angular width versus of the fundamental laser radiation wavelength

Fig. 5. Phase-matching angular width versus of the fundamental laser radiation wavelength



Phase-matching temperature width versus of the wavelength of the fundamental laser radiation

Fig. 6. Phase-matching temperature width versus of the wavelength of the fundamental laser radiation



Phase-matching spectral width versus of the fundamental laser radiation wavelength

Fig. 7. Phase-matching spectral width versus of the fundamental laser radiation wavelength


      Also you can calculate the distributions of the efficiency of conversion in the fixed-field-approximation (the absence of decreasing of the fundamental laser radiation).



Relation efficiency of conversion versus the angular mismatch

Fig. 8. Relation efficiency of conversion versus the angular mismatch



Relation efficiency of conversion versus the spectral mismatch

Fig. 9. Relation efficiency of conversion versus the spectral mismatch


      For effective nonlinearities you can calculate the distributions from initial data and "field" of the effective nonlinearity.



Effective nonlinearity versus wavelength of fundamental laser radiation

Fig. 10. Effective nonlinearity versus wavelength of fundamental laser radiation



"Field" of effective nonlinearity versus angles of orientation

Fig. 11. "Field" of effective nonlinearity versus angles of orientation