大尺度、高功率Bessel光束和Airy光束的产生方法和应用研究

In our previous work, we have studied the generation of a Bessel-Gaussian beam and an Airy beam by using coherent combining technology and adaptive optics technology. Based on our previous research and the existing results about the generation of nondiffracting beams and their applications in optical micromanipulation and micro-imaging we will investigate the method for the generation of nondiffracting beams, especial Bessel-Gaussian beam and Airy beam for the application of long distance propagation. An experiment for the method was designed to verify the feasibility of the method and generate the nondiffracting beams. Then we will study the propagation properties, and the effects of intensity fluctuation and wavefront distortion of high-power laser source on the propagation properties, such as nondiffraction, self-accelerating property and self-healing ability of the nondiffracting beams. Finally, based on the study we will investigate the nondiffraction, self-accelerating property and self-healing ability of the nondiffracting beams in turbulent atmosphere, and expand the application of nondiffracting beams in free space, such as in the area of the technology of laser active illuminated imaging, optical communication and transmitting laser energy.

课题组已对相干合成技术和自适应光学技术产生高功率、大尺度Bessel-Gaussian光束和Airy光束的方法、以及传输特性进行了研究。在此研究基础上，并借鉴已有的Bessel光束和Airy光束的产生方法、以及在粒子操控和微观成像等方面的应用，首先研究以激光远距离传输为应用背景的高功率、大尺度Bessel光束和Airy光束的产生方法，设计基于不同产生方法的实验方案，并利用现有的光电工程手段验证产生方法的可行性。然后设计基于Bessel光束和Airy光束的发射系统，分析激光器输出光束的相位不稳定、光强不均匀等因素对产生的Bessel光束和Airy光束的远距离传输特性，诸如非衍射特性、自修复特性和自加速特性的影响。最后研究Bessel光束和Airy光束在湍流环境下的远距离传输的非衍射特性、自修复特性、以及Airy光束的自加速特性等，探索Bessel光束和Airy光束在大气空间远距离传输的应用。

按照项目的安排计划，在已有实验产生Bessel和Airy光束的基础上，开展了“高能Bessel光束和Airy光束的产生方法研究与实验的可行性验证”，对大功率Airy光束和Bessel光束的发射系统开展了研究，论证了用非球面镜和自适应光学系统对大功率Airy光束和Bessel光束进行发射的可行性，研究了高功率、大尺度Bessel光束和Airy光束湍流大气传输时的光强起伏和相位起伏特性，以及光束漂移特性，拓展了Airy光束和Bessel光束的应用范围。通过项目的开展，在全体项目组成员的共同努力下，较好地完成了项目规定的研究任务，取得了一些研究成果。