Microwave spectra in external-cavity semiconductor lasers: theoretical modeling of multipass resonances

We show theoretically that the behavior of an external-cavity semiconductor laser depends on the microscopic intensity distribution of the feedback light. Adapted rate equations are developed based on the traveling-wave model. This model successfully predicts the double-peaked structure of the external-cavity resonance (centered around c/2L) and multiple-pass resonances when the system is misaligned.<
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