摘要
激光在大气传输中,受湍流、热晕和消光等的影响,远场功率密度分布相对于激光器出口有较大变化,精确测量远场激光光斑能量、光束质量和质心漂移等重要参数,对于分析激光的大气传输效应具有重要意义。重点讨论了探测器点阵法激光远场特性测量技术中测量误差的组成与产生原因,定量分析了误差的大小,并提出了减小测量误差的有效方法,为进一步探索激光与大气介质相互作用规律提供依据。
During laser propagating in atmosphere, the power density distribution in far field changes greatly relative to laser exit due to the turbulence affection, the thermal blooming and extinction. Accurate measuring impor- tant parameters such as laser facula energy, beam quality and centroid shifting in the far field are important to ana- lyze laser atmospheric transmission effect. The measurement error and causes in detector lattice array method laser far field characteristic measurement technology are discussed. The errors are analyzed quantitatively and an effective method to reduce the measurement error is proposed, which provides the basis for further exploring the interaction law between laser and atmospheric medium.
出处
《光电技术应用》
2017年第1期81-85,共5页
Electro-Optic Technology Application
关键词
激光远场
测量误差
探测器阵列
laser far field
measurement error
detector array
