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Phys. Rev. A 74, 063814 (2006) [5 pages]

Inverse scattering approach to multiwavelength Fabry-Pérot laser design

S. O'Brien,1 S. Osborne,1 K. Buckley,1 R. Fehse,1 A. Amann,1 E. P. O'Reilly,1 L. P. Barry,2 P. Anandarajah,2 J. Patchell,3 and J. O'Gorman3
1Tyndall National Institute, University College, Lee Maltings, Cork, Ireland
2RINCE, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
3Eblana Photonics, Trinity College Enterprise Centre, Pearse Street, Dublin 2, Ireland

Received 10 May 2006; published 14 December 2006

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.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.74.063814
DOI: 10.1103/PhysRevA.74.063814
PACS: 42.55.Px; 42.60.Da; 85.60.Bt
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • 42.60.Da
    Laser resonators, cavities, amplifiers, arrays, and rings
  • 85.60.Bt
    Optoelectronic device characterization, design, and modeling
  • YEAR: 2006
KEYWORDS: semiconductor lasers, Fabry-Perot resonators, laser cavity resonators, laser modes

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