光学 精密工程, 2013, 21 (5): 1129, 网络出版: 2013-05-31   

大变倍比近红外无焦激光扩束系统

Near-infrared afocal laser beam expanding system with large zoom ratio
作者单位
南京理工大学 电子工程与光电技术学院, 江苏 南京 210094
摘要
为研究闪电特性, 设计了用于闪电实验室场景模拟的大变倍比近红外无焦激光扩束光学系统, 用于模拟不同光斑尺寸的闪电单元。根据高斯光学几何法计算系统外形尺寸, 合理确定了各组份的口径及光焦度; 由ZEMAX软件包优化设计得到系统的光学结构参数, 并对系统整体性能进行了分析评价。该系统变倍比为13, 出射光束光斑均匀、无衍射环, 满足研究闪电信号特性的需求。激光扩束系统的中心工作波长为777.4 nm, 入射光束直径为1.0 mm, 入射激光光束在步进电机驱动下连续可调, 使得出射光束可从φ0.8 mm变化到φ10.6 mm。系统具有镜片少, 结构简单, 变焦轨迹平滑无卡滞等优点, 可用于模拟不同尺寸的闪电单元。
Abstract
To explore lightning properties, a near-infrared afocal continuous zoom laser beam expanding system with large zoom ratio was designed to simulate lightning spot elements with different sizes for the lightning scene in a laboratory. On the basis of Gaussian geometric method, the overall dimensions of the system was calculated and the diameters and focal powers of lenses were determined reasonably. By using ZEMAX optical design software, optical structural parameters of the system were optimized, then total performance of the system was analyzed and evaluated. As the results, the system shows a 13X beam expansion ratio and excellent emitting beams with higher energies, uniform spots, and diffraction-free rings, which meets the requirements for simulating lightning properties. Furthermore, the central wavelength of the afocal laser beam expanding system is 777.4 nm, the incident laser beam with a diameter of 1.0 mm is continuously adjustable by a stepper motor and the emitted beam diameter ranges from φ0.8 mm to φ10.6 mm. The beam expanding system has some advantages of fewer lenses, simple structures and smoothly zoom trajectory, and it is suitable for simulating lighting elements with different sizes.

叶井飞, 高志山, 叶海水, 刘晓莉, 成晓强. 大变倍比近红外无焦激光扩束系统[J]. 光学 精密工程, 2013, 21(5): 1129. YE Jing-fei, GAO Zhi-shan, YE Hai-shui, LIU Xiao-li, CHENG Xiao-qiang. Near-infrared afocal laser beam expanding system with large zoom ratio[J]. Optics and Precision Engineering, 2013, 21(5): 1129.

本文已被 3 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!