一维相干阵半导体激光光束远场特性研究  

Research on Far-field Characteristics of One-dimensional Coherent Array Semiconductor Laser Beam

作　　者：李尉 叶征宇[1] 温丛阳 代京京[1] 兰天[1] 王智勇[1,2] LI Wei;YE Zhengyu;WEN Congyang;DAI Jingjing;LAN Tian;WANG Zhiyong(Institute of Advanced Semiconductor Optoelectronic Technology,Beijing University of Technology,Beijing,China;Materials Institute of Atomic and Molecular Science,Shaanxi University of Science and Technology,Xi'an,China)

机构地区：[1]北京工业大学先进半导体光电技术研究所,北京 [2]陕西科技大学材料原子分子科学研究所,西安

出　　处：《光电技术应用》2021年第6期40-44,共5页Electro-Optic Technology Application

摘　　要：研究了一维相干阵半导体激光器在远场的光束传输特性。通过建立数学物理模型,模拟计算了一维相干阵激光器的激光光束在远场的光强分布,分析了阵列长度、波长和占空比对不同距离处相干阵远场快慢轴方向光斑宽度的影响。研究表明,受一维相干阵半导体激光慢轴方向子光源相干作用的影响,在远场,相干阵半导体激光器的慢轴方向光斑宽度与快轴方向宽度相比,相差约4个数量级,激光光斑呈现"刀片"状分布。The beam propagation characteristics of a one-dimensional coherent array semiconductor laser in the far field are researched. By establishing a mathematical physical model, the laser beam intensity distribution in the far field of a one-dimensional coherent array laser is calculated and simulated. The influence of array length,wavelength and duty ratio on the spot width in the fast and slow axis of the coherent array at different distances is analyzed. Research results show that the optical field of one-dimensional coherent semiconductor laser array is affected by the coherent action of the sub-source in the slow axis direction. The spot width in the slow axis direction differs by about 4 orders of magnitude compared with that in the fast axis direction in the far field. Thus, the laser spot is distributed in the shape of“blade”.

关 键 词：相干阵激光器 相干合成 光斑宽度 

分 类 号：TN248.4[电子电信—物理电子学]