通过单元细胞结构设计对二维光子晶体激光器的极化模式控制
1Department of Electronic Science and Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan. snoda@kuee.kyoto-u.ac.jp
Science (New York, N.Y.)
|August 11, 2001
概括
我们通过改变单元细胞几何学来控制2D光子晶体激光器中的光极化. 这一创新使单波长激光与可选择的偏振用于先进的光学设备.
科学领域:
- 光学和光子学 在光学和光子学.
- 材料科学 材料科学 材料科学
- 激光物理 激光物理
背景情况:
- 光子晶体为光传播提供了独特的控制.
- 激光器中的极化控制对于许多应用至关重要.
- 现有的光子晶体激光器极化选择方法是有限的.
研究的目的:
- 在二维 (2D) 光子晶体激光器中演示极化模式选择.
- 为了研究单元细胞几何学对激光偏振的影响.
- 为了实现可控的,单波长的激光,具有特定的极化.
主要方法:
- 对具有不同单元细胞几何形状 (圆形与圆形) 的正方形格子光子晶体带图的理论计算.
- 制造具有圆单位细胞结构的二维光子晶体.
- 将光子晶体与增强介质集成,以实现激光.
主要成果:
- 计算预测了通过改变单元细胞几何从圆形变为圆形来显著修改电磁场分布.
- 制造的圆单位细胞光子晶体证明了连贯的2D激光.
- 观察到的激光显示出单一的波长和受控的极化,与理论预测相匹配.
结论:
- 单元细胞几何是控制二维光子晶体激光器中极化模式的可行机制.
- 圆单位细胞使光子晶体激光器中的有效极化选择成为可能.
- 这项工作为开发具有定制极化输出功率的激光器铺平了道路.
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