Measurements and modeling indicate that the pulses emitted from the locked laser can be significantly different from the master laser
The results indicate precision is required for coherently injection mode locking. Small changes in repletion rate or mode alignment between the master and slave lasers can lead to the pulse shapes from the slave laser that have dramatically different characteristics.
Large tuning range of repetition rate is explained by large group velocity variation and nonlinear pulse propagation 
A simple numerical model predicts qualitative features of experimentally observed interferometric dips and shows appropriate temporal and spectral shape changes
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