Relation between efficiency of second harmonic generation and spectral properties of a one-dimensional photonic crystal |
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Authors: | R G Zaporozhchenko |
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Institution: | (1) Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus |
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Abstract: | Numerical calculation of second harmonic generation in a photonic crystal consisting of alternating quarter-wave layers of ZnS and SeF2 pumped by a femtosecond tunable laser is carried out. The results are compared with the spectral characteristics of the photonic crystal obtained with the use of a matrix method for calculating transmission coefficients. It is shown that the maximum efficiency of conversion to the second harmonic takes place at a minimum group velocity mismatch of the pump and second harmonic waves, corresponding to pump frequencies in the range below the band gap edge of the photonic crystal. |
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