Polarization mode control of two-dimensional photonic crystal laser by unit cell structure design
Polarization mode control of two-dimensional photonic crystal laser by unit cell structure design
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DOI：
10.1126/science.1061738
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发表时间：
2001-08-10
期刊：
影响因子：
56.9
通讯作者：
Mochizuki, M
中科院分区：
文献类型：
--
作者：
Noda, S;Yokoyama, M;Mochizuki, M
我们演示了通过控制单晶结构的几何形状来选择二维光子晶体激光器的偏振模式。由于方形晶格光子晶体的能带图受到单晶结构的影响，计算表明，将圆形结构改变为椭圆形结构会导致能带边缘电磁场分布的强烈改变。这样的结构修改被期望提供一种机制来控制所发射光的偏振模式。制备了具有椭圆单胞结构的方晶格光子晶体，并将其与增益介质集成。观测到的单波长可控偏振的相干二维激光作用与预测的一致。
We demonstrate polarization mode selection in a two-dimensional (2D) photonic crystal laser by controlling the geometry of the unit cell structure. As the band diagram of the square-lattice photonic crystal is influenced by the unit cell structure, calculations reveal that changing the structure from a circular to an elliptical geometry should result in a strong modification of the electromagnetic field distributions at the band edges. Such a structural modification is expected to provide a mechanism for controlling the polarization modes of the emitted light. A square-lattice photonic crystal with the elliptical unit cell structure has been fabricated and integrated with a gain media. The observed coherent 2D lasing action with a single wavelength and controlled polarization is in good agreement with the predicted behavior.