Gratings with an aperiodic basis: single-mode emission in multi-wavelength lasers
Dupuis, R. D.
Dal Negro, L.
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CitationBlanchard, R, S Menzel, C Pflügl, L Diehl, C Wang, Y Huang, J-H Ryou, R D Dupuis, L Dal Negro, and F Capasso. 2011. “Gratings with an Aperiodic Basis: Single-Mode Emission in Multi-Wavelength Lasers.” New Journal of Physics 13 (11): 113023. https://doi.org/10.1088/1367-2630/13/11/113023.
AbstractWe propose a new class of gratings having multiple spatial frequencies. Their design relies on the use of small aperiodic grating sequences as unit cells whose repetition forms a superlattice. The superlattice provides well-defined Fourier components, while the choice of the unit cell structure enables the selection, modulation or suppression of certain Fourier components. Using these gratings to provide distributed feedback in mid-infrared quantum cascade lasers, we demonstrate simultaneous lasing on multiple well-defined and isolated longitudinal modes, each one having a sidemode suppression ratio of about 20 dB.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41371555
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