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(Color online) (a) TPA and free carrier loss profiles of and wide input pulses. (b) Estimated output pulses and chirp induced by free carrier plasma effect. The front end of both pulses are under TPA dominant nonlinear regime. However, due to excess free carriers, the trailing edge of pulse is under FCA dominant nonlinear regime. The time axis is normalized with input pulse width for comparison purposes.
(Color online) Predicted pulse compression ratio in (a) long silicon waveguide for different initial pulse widths and (b) silicon waveguides with different lengths.
(Color online) (a) Laser output for pulses with rise time. (Inset) Modulation signals used for modelocking experiment. (b) Variation of output pulse width with respect to pulse energy.
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