基于缺陷镜的空心结构光束直接产生研究

doi:10.3969/j.issn.1007-5461.2022.01.011

量子电子学报 ›› 2022, Vol. 39 ›› Issue (1): 142-149.doi: 10.3969/j.issn.1007-5461.2022.01.011

• "轨道角动量：从经典光学到量子信息”专辑 • 上一篇下一篇

基于缺陷镜的空心结构光束直接产生研究

周伦滨1 , 王冬1 , 徐斌1∗ , 廖廷俤2

( 1 厦门大学电子科学与技术学院, 福建厦门 361005; 2 泉州师范学院光子技术研究中心, 福建泉州 362000 )

收稿日期:2021-09-29 修回日期:2021-11-02 出版日期:2022-01-28 发布日期:2022-01-28
通讯作者: E-mail: xubin@xmu.edu.cn E-mail:E-mail: xubin@xmu.edu.cn
作者简介:周伦滨 ( 1997 - ), 福建宁德人, 研究生, 主要从事基于固体激光技术的结构光场产生及其调控方面的研究。 E-mail: 23120191150275@stu.xmu.edu.cn
基金资助:
Supported by Shenzhen University International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology (深圳大学二维材料光电科技国际合作联合实验室开放课题, 2DMOST2018026), Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices (福建省先进微纳光子技术与器件重点实验室开放课题, AMPTD202001)

Research on direct generation of hollow structured laser beam based on a spot defect mirror

ZHOU Lunbin 1 , WANG Dong 1 , XU Bin 1∗ , LIAO Tingdi

( 1 School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, China; 2 Research Center of Photonics Technology, Quanzhou Normal University, Quanzhou 362000, China )

Received:2021-09-29 Revised:2021-11-02 Published:2022-01-28 Online:2022-01-28

摘要/Abstract

摘要： 空心光束是一种重要的结构光, 是光场调控研究领域的热点之一。拉盖尔-高斯光束是一种典型的空心光束, 因其螺旋状相位且携带轨道角动量, 因而也被称为涡旋光。涡旋光在光通信、量子纠缠和超分辨成像等领域有着极高的应用价值。本研究以全固态两镜凹平腔 Nd: YVO4 激光器作为实验平台, 通过在输出平面镜上制造点缺陷, 达到抑制低阶高斯模式起振, 从而获得高阶拉盖尔-高斯涡旋激光输出的效果。在连续波情况下, 最高获得了 16 阶涡旋激光输出; 在吸收功率为 3.3 W 时, 获得最高功率为 280 mW, 激光斜效率为 18.6%。进一步通过在谐振腔中插入 Cr:YAG 可饱和吸收体, 首次演示了具有正反手性的拉盖尔-高斯同时被动调 Q 脉冲激光, 稳定输出的最短脉冲宽度约为 232 ns, 相应的脉冲重复频率约为 229.1 kHz。本研究表明点缺陷镜是一种稳定可靠的直接产生高阶涡旋光的手段, 并且可以与被动调 Q 等固体激光技术结合产生不同运转方式的空间结构光束。

关键词: 量子光学, 光场调控, 点缺陷镜, 空心光束, 涡旋光, 连续波, 被动调 Q

Abstract: Hollow beam is an important structured light and also one of the hot research topics in the field of light field manipulation. As a typical hollow beam, Laguerre-Gaussian beam is also named vortex beam because of its helical phase. Moreover, because of carrying orbital angular momentum, vortex beam is tremendously valuable in optical communication, quantum entanglement and super-resolution imaging. In this work, based on the all-solid-state two-mirror concave-plane Nd:YVO4 laser experimental platform, the continuous-wave 16th-order vortex laser is obtained by fabricating some spot defects onto the output coupler to suppress the low-order Gaussian mode and force the operation of high-order Laguerre-Gaussian vortex laser. A maximum output power of 280 mW is achieved with a slope efficiency f 18.6% at an absorbed power of 3.3 W. Furthermore, a passive Q-switched high-order LaguerreGaussian laser with positive and negative handedness is demonstrated for the first time by inserting a Cr:YAG crystal into the laser cavity as a saturable absorber, and the shortest pulse width of the pulsed laser is 232 ns at a repetition rate of 229.1 kHz. The research indicates that spot defect mirror is a stable and reliable measures for direct generation of high-order vortex lasers. Moreover, it can be combined with other solid-state laser technology such as passive Q switching to produce spatially structured light operating at different regimes.

Key words: quantum optics, optical field manipulation, spot defect mirror, hollow beam, vortex beam; continuous-wave, passive Q switching

中图分类号:

O431.2

周伦滨, 王冬, 徐斌∗, 廖廷俤. 基于缺陷镜的空心结构光束直接产生研究[J]. 量子电子学报, 2022, 39(1): 142-149.

ZHOU Lunbin , WANG Dong , XU Bin ∗ , LIAO Tingdi. Research on direct generation of hollow structured laser beam based on a spot defect mirror[J]. Chinese Journal of Quantum Electronics, 2022, 39(1): 142-149.

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基于缺陷镜的空心结构光束直接产生研究

Research on direct generation of hollow structured laser beam based on a spot defect mirror

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