Panoiu Nicolae C, Bahl Mayank, Osgood Richard M
Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
Opt Lett. 2003 Dec 15;28(24):2503-5. doi: 10.1364/ol.28.002503.
An analysis of the tunable superprism effect in a two-dimensional nonlinear photonic crystal is presented. We show that, by shifting the photonic bands of the crystal through the Kerr effect induced by a pump beam, one can tune the refraction angle of a transmitted signal beam over tens of degrees. We also demonstrate that the optical power required to tune the refracted angle is dramatically reduced if the frequency of the pump beam is close to a bandgap edge.
本文对二维非线性光子晶体中的可调谐超棱镜效应进行了分析。我们表明，通过泵浦光束诱导的克尔效应来移动晶体的光子带，能够将透射信号光束的折射角调谐数十度。我们还证明，如果泵浦光束的频率接近带隙边缘，调谐折射角所需的光功率将显著降低。
