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Optically Triggered Q-Switched Photonic Crystal Laser

Research Area: Nanophotonics Year: 2005
Type of Publication: Article Keywords: liquid crystal devices, semiconductor lasers, Q-switching, photonic crystal
Authors: Maune, Brett; Witzens, Jeremy; Baehr-Jones, Tom; Kolodrubetz, M.; Atwater, H. A.; Scherer, Axel; Hagen, R.; Qiu, Y.
Journal: Optics Express Volume: 13
Number: 12 Pages: 4699-4707
Month: June
An optically triggered liquid crystal infiltrated Q-switched photonic crystal laser is demonstrated. A photonic crystal laser cavity was designed and fabricated to support two orthogonally polarized high-Q cavity modes after liquid crystal infiltration. By controlling the liquid crystal orientation via a layer of photoaddressable polymer and a writing laser, the photonic crystal lasing mode can be reversibly switched between the two modes which also switches the laser's emission polarization and wavelength. The creation of the Q-switched laser demonstrates the benefits of customizing photonic crystal cavities to maximally synergize with an infiltrated material and illustrates the potential of integrating semiconductor nanophotonics with optical materials.
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