Acta Optica Sinica, Volume. 19, Issue 12, 1608(1999)
Effect of External Applied Alternating Field on the Transient Behaviour of Fundamental Harmonic of Photorefractive Space-Charge Field
The “hopping” model is used to analyze the transient behaviours of fundamental harmonic of the space-charge field with external AC field. Exact and approximate dynamic analytical solutions are presented in the presence of sinusoidal AC field and square-wave field. For the applied AC field, it is found that the real part of the fundamental space-charge field varies at the same frequency as that the applied field does, the imaginary part oscillates at twice the frequency. The photorefractive grating is phase-shift for high frequency of external applied alternating field. These results are in agreement with those derived from the band -transport model.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Effect of External Applied Alternating Field on the Transient Behaviour of Fundamental Harmonic of Photorefractive Space-Charge Field[J]. Acta Optica Sinica, 1999, 19(12): 1608