Inverse scattering approach to multiwavelength Fabry-Pérot laser design
O'Brien, S., Osborne, S., Buckley, K., Fehse, R., Amann, A., O'Reilly, E.P., Barry, Liam P.ORCID: 0000-0001-8366-4790, Anandarajah, Prince M.ORCID: 0000-0001-7335-8044, Patchell, J. and O'Gorman, James
(2006)
Inverse scattering approach to multiwavelength Fabry-Pérot laser design.
Physical Review A, 74
(6).
ISSN 1050-2947
A class of multiwavelength Fabry-Pérot lasers is introduced where the spectrum is tailored through a patterning of the cavity effective index. The cavity geometry is obtained using an inverse scattering approach and can be designed such that the spacing of discrete Fabry-Pérot lasing modes is limited only by the bandwidth of the inverted gain medium. A specific two-color semiconductor laser with a mode spacing in the THz region is designed, and measurements are presented demonstrating the simultaneous oscillation of the two wavelengths. The nonperiodic effective index profile of the particular two-color device considered is shown to be related to a Moiré or superstructure grating.