Browsing by Author "Sulkin, Joshua D."

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    Mode Control in Photonic Crystal Vertical-Cavity Surface-Emitting Lasers and Coherent Arrays
    (Institute of Electrical and Electronics Engineers (IEEE), 2009-05) Siriani, Dominic F.; Peun Tan, Meng; Kasten, Ansas M.; Leisher, Paul O.; Sulkin, Joshua D.; Raftery, James J.; Danner, Aaron J.; Giannopoulos, Antonios V.; Choquette, Kent D.
    We demonstrate transverse mode control in vertical-cavity surface-emitting lasers (VCSELs) and 2-D VCSEL arrays. By etching a periodic arrangement of circular holes into the top distributed Bragg reflector mirror, we are able to control the lasing modes through index and loss confinement. Theoretical modeling of these confinement effects are shown to be consistent with experimental measurements. Photonic crystal etched patterns and ion-implanted photonic lattices have been employed to fabricate coherently-coupled 2-D arrays. Control of the array supermodes from the out-of-phase and in-phase conditions is discussed. Designs of photonic crystal coherent VCSEL arrays for high-power emission and beam steering applications are described.
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    Single Mode Photonic Crystal Vertical Cavity Surface Emitting Lasers
    (Hindawi Limited, 2012-02-14) Choquette, Kent D.; Siriani, Dominic F.; Kasten, Ansas M.; Tan, Meng Peun; Sulkin, Joshua D.; Leisher, Paul O.; Raftery, James J.; Danner, Aaron J.
    We review the design, fabrication, and performance of photonic crystal vertical cavity surface emitting lasers (VCSELs). Using a periodic pattern of etched holes in the top facet of the VCSEL, the optical cavity can be designed to support the fundamental mode only. The electrical confinement is independently defined by proton implantation or oxide confinement. By control of the refractive index and loss created by the photonic crystal, operation in the Gaussian mode can be insured, independent of the lasing wavelength.