Effect of nonlinear gain reduction on semiconductor laser wavelength chirping

Koch, T. L.; Linke, R. A.
March 1986
Applied Physics Letters;3/10/1986, Vol. 48 Issue 10, p613
Academic Journal
A simple wavelength chirping formula is presented which includes small nonlinearities in the net gain such as spectral hole burning. The two dominant terms are a laser-structure-independent derivative or ‘‘transient’’ chirp and a structure-dependent ‘‘adiabatic’’ chirp, each with distinctly different lightwave system consequences. The two chirp contributions are indirectly related through their mutual association with relaxation oscillations. Time-resolved spectral measurements on a number of different laser structures support the results.


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