激光与光电子学进展, 2015, 52 (4): 042602, 网络出版: 2015-04-09  

蓝光LED产生局域空心光束 下载: 540次

Bottle Beam Generated by Blue LED
作者单位
华侨大学信息科学与工程学院福建省光传输与变换重点实验室, 福建 厦门 361021
摘要
利用非相干蓝光LED 和轴棱锥-透镜系统直接产生局域空心光束,证实了非相干光源通过轴棱锥-透镜系统可以得到局域空心光束。利用衍射理论和多波长叠加原理分析了具有一定频宽的部分相干光入射轴棱锥-透镜系统后的光场分布,并模拟了光束传输变换过程的三维光强分布及不同位置处的截面光强分布。实验采用蓝光LED结合轴棱锥-透镜系统产生局域空心光束,利用体视显微镜对不同位置处的光束截面光强分布进行记录。实验结果与理论分析相吻合,研究结果扩展了LED 的应用,对粒子囚禁、原子冷却具有一定的指导和现实意义。
Abstract
A bottle beam is generated using an axicon- lens system and an incoherent blue LED source. It is demonstrated that the bottle beam can be obtained via an axicon-lens system illuminlated by an incoherent source. According to diffraction theory and the superposition of multi-wavelength, the intensity distribution of light field which is generated by a certain frequency bandwidth of partially coherent light propagating through an axicon-lens system is analyzed. The three-dimensional intensity distribution of the beam evolution and the transverse intensity distributions at different propagating distances are simulated. In the experiment, a blue LED source combined with an axicon-lens system is used to generate the bottle beam. The transverse intensity distribution of the bottle beam is recorded by a stereomicroscope. The experimental results are consistent well with the theoretical analysis, and the result shows a guidance and practical significance for particle trapping and atom cooling.

李攀, 吴逢铁, 何西, 孙川. 蓝光LED产生局域空心光束[J]. 激光与光电子学进展, 2015, 52(4): 042602. Li Pan, Wu Fengtie, He Xi, Sun Chuan. Bottle Beam Generated by Blue LED[J]. Laser & Optoelectronics Progress, 2015, 52(4): 042602.

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!