Larger-area single-mode photonic crystal surface-emitting lasers enabled by an accidental Dirac point
Author(s)Chua, Song-Liang; Lu, Ling; Bravo-Abad, Jorge; Joannopoulos, John D.; Soljačić, Marin; Soljacic, Marin; ... Show more Show less
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By altering the lattice geometry of the photonic crystal (PhC) surface-emitting lasers (PCSELs), we tune the regular lasing band edges of quadratic dispersions to form a single accidental Dirac point of linear dispersion at the Brillouin zone center. This not only increases the mode spacing by orders of magnitude but also eliminates the distributed in-plane feedback to enable single-mode PCSELs of substantially larger area and thus substantially higher output power. The advantages of using accidental Dirac cones are systematically evaluated through two-dimensional in-plane calculations and confirmed by three-dimensional simulations of PhC slab devices.
DepartmentMassachusetts Institute of Technology. Materials Processing Center; Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics
Optical Society of America
Chua, Song-Liang, Ling Lu, Jorge Bravo-Abad, John D. Joannopoulos, and Marin Soljačić. “Larger-Area Single-Mode Photonic Crystal Surface-Emitting Lasers Enabled by an Accidental Dirac Point.” Optics Letters 39, no. 7 (April 1, 2014): 2072.