Self-focusing collapse distance in ultrashort pulses and measurement of nonlinear index.
نویسندگان
چکیده
We analyze the method of moving focus to determine the critical power for self-focusing by means of numerical simulation and a semianalytical model. It is shown that the original interpretation of a moving focus experiment does not hold in general and that inclusion of defocusing effects due to free electrons is necessary to relate the measured data to critical power.
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ورودعنوان ژورنال:
- Optics letters
دوره 36 13 شماره
صفحات -
تاریخ انتشار 2011