Hwang Chi-Young, Choi Dawoon, Kim Kyoung-Youm, Lee Byoungho
National Creative Research Center for Active Plasmonics Application Systems Inter-University Semiconductor Research Center and School of Electrical Engineering Seoul National University, Gwanak-Gu Gwanakro 599, Seoul 151-744, Korea.
Opt Express. 2010 Oct 25;18(22):23504-16. doi: 10.1364/OE.18.023504.
We derive a general form of Airy wave function which satisfies paraxial equation of diffraction. Based on this, we propose a new form of Airy beam, which is composed of two symmetrical Airy beams which accelerate mutually in the opposite directions. This 'dual' Airy beam shows several distinguishing features: it has a symmetric transverse intensity pattern and improved self-regeneration property. In addition, we can easily control the propagation direction. We also propose 'quad' Airy beam, which forms a rectangular shaped optical array of narrow beams that travel along a straight line. We can control its propagation direction without changing transverse intensity patterns. These kinds of superposed optical beams are expected to be useful for various applications with their unique properties.
我们推导了满足衍射傍轴方程的艾里波函数的一般形式。基于此，我们提出了一种新形式的艾里光束，它由两个沿相反方向相互加速的对称艾里光束组成。这种“对偶”艾里光束具有几个显著特征：它具有对称的横向强度分布和改进的自再生特性。此外，我们可以轻松控制其传播方向。我们还提出了“四重”艾里光束，它形成了一个沿直线传播的窄光束矩形光学阵列。我们可以在不改变横向强度分布的情况下控制其传播方向。这些叠加光束因其独特的性质有望用于各种应用。
