摘要
The modulation instability of quasi-plane-wave optical beams is investigated in the frame of generalized SchrSdinger equation with the nonlinear term of a general form. General expressions are derived for the dispersion relation, the critical transverse spatial frequency, as well as the instability growth rate. The analysis generalizes the known results reported previously. A detailed discussion on the modulation instability in biased centrosymmetric photorefractive media is also given.
The modulation instability of quasi-plane-wave optical beams is investigated in the frame of generalized SchrSdinger equation with the nonlinear term of a general form. General expressions are derived for the dispersion relation, the critical transverse spatial frequency, as well as the instability growth rate. The analysis generalizes the known results reported previously. A detailed discussion on the modulation instability in biased centrosymmetric photorefractive media is also given.
基金
This work was supported by the National Natural Sci- ence Foundation of China (No. 10374121) the Nat- ural Science Foundation of Guangdong Province, China (No. 031567).
