超艾里光束激光器的设计  

Design of Super-Airy Beam Laser

作　　者：邓想全 徐世祥[1,2] 吴庆阳[1,2] 郑国梁[1,2] 

机构地区：[1]深圳大学电子科学与技术学院,广东深圳518060 [2]深圳微纳光子信息技术重点实验室,广东深圳518060

出　　处：《激光与光电子学进展》2016年第10期225-231,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11404220;61275101);深圳市技术研究开发计划(JCYJ20120614085204873;JCYJ20140418091413574);深圳市微纳光子信息技术重点实验室开放基金(MN201408;MN201503)

摘　　要：与传统的二维艾里光束相比,超艾里光束具有无衍射性、自弯曲性、自愈性等传输特性,主瓣尺寸更小、能量更集中,因此超艾里光束在光学微粒子操控等领域具有广阔的应用前景。为了得到产生超艾里光束的紧凑装置,提出了一种直接输出超艾里光束的激光器设计方案。该激光器使用激光二极管作为抽运源,采用端泵的方式抽运掺杂浓度为1%(原子分数)的掺钕钇铝石榴石(Nd:YAG)棒,以加载了超艾里光束立方相位信息的衍射光栅作为耦合输出镜,在一级衍射方向直接输出超艾里光束。计算结果表明,该激光器的阈值功率为1.4 W,当抽运功率为2 W时,输出功率达到678 mW。Compared with the traditional two-dimensional Airy beams, the super-Airy beams have such transmission characteristics as no diffraction, self-bending and self-healing, and their main lobes have advantages like much smaller size and more intensive energy. Therefore, the super-Airy beams have a broad application prospect in the optical micro-particle manipulation. In order to make a compact equipment for generating super-Airy beams, we present a laser design proposal for outputting the super-Airy beams directly. In our design, the 1% neodymium-doped yttrium aluminum garnet rod is pumped by a laser diode which is used as the pump source. The diffraction grating on which the cubic phase information of the super-Airy beams is loaded is used as the output coupler, so that it can output the super-Airy beams directly in the direction of the first order diffraction. The numerical calculation results show that the threshold power of the laser is 1.4 W, and the output power will rise up to 678 mW when the pump power is 2 W.

关 键 词：物理光学 超艾里光束 衍射光栅 激光器 

分 类 号：O436[机械工程—光学工程]