Parsa Shahrzad, Fallah Hamid Reza, Ramezani Mohsen, Soltanolkotabi Mahmood
Department of Physics, University of Isfahan, Isfahan, Iran.
Appl Opt. 2012 Nov 1;51(31):7475-81. doi: 10.1364/AO.51.007475.
Nondiffracting Bessel-Gauss beams are assumed as the superposition of infinite numbers of Gaussian beams whose wave vectors lie on a cone. Based on such a description, different methods are suggested to generate these fields. In this paper, we followed an active scheme to generate these beams. By introducing an axicon-based resonator, we designed the appropriate resonator, studied its resonance modes, and analyzed the beam propagation outside the resonator. Experimentally, we succeeded to obtain Bessel-Gauss beams of the first kind and zero order. We also investigated the changes in effective parameters on the output beam, both theoretically and experimentally.
非衍射贝塞尔 - 高斯光束被假定为无限多个波矢位于圆锥上的高斯光束的叠加。基于这样的描述，人们提出了不同的方法来产生这些场。在本文中，我们采用了一种主动方案来产生这些光束。通过引入基于轴棱锥的谐振腔，我们设计了合适的谐振腔，研究了其谐振模式，并分析了谐振腔外的光束传播。在实验上，我们成功获得了一阶零阶的贝塞尔 - 高斯光束。我们还从理论和实验两方面研究了有效参数对输出光束的影响。
