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Higher-Order Defect-Mode Laser in an Optically Thick Photonic Crystal Slab

Research Area: Nanophotonics Year: 2013
Type of Publication: Article Keywords: photonic crystal, quality factor, cavity, mode, laser, hexapole, bandgap, nanophotonics, thick slab
Authors: Kim, Se-Heon; Huang, Jingqing; Scherer, Axel
Journal: Optics Letters Volume: 38
Number: 2 Pages: 94-96
Month: January
The use of an optically thick slab may provide versatile solutions for the realization of a current injection-type laser using photonic crystals. Here, we show that a transversely higher-order defect mode can be designed to be confined by a photonic bandgap in such a thick slab. Using simulations, we show that a high Q of >10^5 is possible from a finely tuned second-order hexapole mode (2h). Experimentally, we achieve optically pumped pulsed lasing at 1347 nm from the 2h with a peak threshold pump power of 88 μW.
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