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中心主瓣尺寸可精细调控的类贝塞尔光束

Bessel-Like Beams with the Precisely Controllable Central Lobe Size

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摘要

设计了一种相位函数,得到类贝塞尔光束中心主瓣尺寸随传播距离演化的解析公式,实现了类贝塞尔光束中心主瓣尺寸随轴向距离z的线性调控。通过实验,将所设计的相位函数加载到空间光调制器上,在直接空间中实现了类贝塞尔光束中心主瓣尺寸的精确调控,研究了不同传播长度下类贝塞尔光束中心主瓣尺寸的演化。实验结果与仿真结果一致,验证了该相位函数的可靠性,且在整个贝塞尔区间内,最高强度处的横向光强分布仍满足贝塞尔函数分布。

Abstract

We design a phase function to precisely tune the central lobe size of the Bessel-like beams with the axial distance z. We further deduce the analytical formula of the central lobe size evolution with the propagation distance. Experimentally, we perform the precise control of the central lobe size in the direct space with our phase function loaded on the spatial light modulator. The measured evolutions of the Bessel-like beams with different lobe parameters agree well with the analytical and simulated results, which verifies the reliability of the phase function. Furthermore, the transverse intensity profiles at the longitudinal location of the peak intensity can be well fitted by the Bessel function.

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中图分类号:O436.1

DOI:10.3788/aos201838.0714001

所属栏目:激光器与激光光学

基金项目:国家自然科学基金(61605142,61535009)、深圳大学光电子器件与系统教育部/广东省重点实验室开放基金

收稿日期:2017-12-05

修改稿日期:2018-02-01

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倪丹丹:天津大学精密仪器与光电子工程学院超快激光研究室/光电信息技术科学教育部重点实验室, 天津 300072
谢辰:天津大学精密仪器与光电子工程学院超快激光研究室/光电信息技术科学教育部重点实验室, 天津 300072深圳大学光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
赵振宇:天津大学精密仪器与光电子工程学院超快激光研究室/光电信息技术科学教育部重点实验室, 天津 300072
肖娜:天津大学精密仪器与光电子工程学院超快激光研究室/光电信息技术科学教育部重点实验室, 天津 300072
张聿全:深圳大学光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060深圳大学纳米光子学研究中心, 广东 深圳 518060
胡明列:天津大学精密仪器与光电子工程学院超快激光研究室/光电信息技术科学教育部重点实验室, 天津 300072

联系人作者:谢辰(xie_chen@tju.edu.cn)

备注:倪丹丹(1993-),女,硕士研究生,主要从事光束整形方面的研究。 E-mail: nidandan218@163.com

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引用该论文

Ni Dandan,Xie Chen,Zhao Zhenyu,Xiao Na,Zhang Yuquan,Hu Minglie. Bessel-Like Beams with the Precisely Controllable Central Lobe Size[J]. Acta Optica Sinica, 2018, 38(7): 0714001

倪丹丹,谢辰,赵振宇,肖娜,张聿全,胡明列. 中心主瓣尺寸可精细调控的类贝塞尔光束[J]. 光学学报, 2018, 38(7): 0714001

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