Liquid-crystal electric tuning of a photonic crystal laser

Maune, Brett; Lončar, Marko; Witzens, Jeremy; Hochberg, Michael; Baehr-Jones, Thomas; Psaltis, Demetri; Scherer, Axel; Yueming Qiu
July 2004
Applied Physics Letters;7/19/2004, Vol. 85 Issue 3, p360
Academic Journal
An electrically tuned nematic liquid-crystal (LC) infiltrated photonic crystal (PC) laser is demonstrated. This PC laser represents an emerging class of nanoscale optical adaptive devices enabled by the convergence of nonlinear optical materials, electronics, and fluidics that promise increased functionality and utility over existing technologies. A LC cell is constructed by encasing the PC laser between two indium tin oxide glass plates, which serve as the modulating electrodes. Applying a voltage across the cell realigns the LC, modifies the laser cavity’s optical path length, and blueshifts the lasing wavelength.


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