相关实验视频

Updated: Jul 1, 2025

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

可调节波长的Tm:Y₂O₃陶旋激光器具有可变的轨道角运动量状态

Tianyi Du, Changsheng Zheng, Xiangzhe Sun

|March 4, 2024

概括

研究人员开发了一种波长可调节的激光,它发出具有轨道角动量 (OAM) 的结构光. 这一突破使大容量光通信能够通过结合波长分割复杂化和OAM模式分割复杂化来实现.

科学领域:

激光物理激光物理
光学通信是指光学通信.
结构化灯光结构化灯光

背景情况:

轨道角动量 (OAM) 激光器通过启用OAM模式划分多重复合 (OAM-MDM) 来提供高容量光通信的潜力.
将OAM与波长分割多重复合 (WDM) 集成需要可调节的OAM光源.

研究的目的:

为了展示一个波长可调节的散量 (Tm-bulk) 激光器,它能够控制轨道角动量 (OAM) 状态.
研究2μm光谱范围内OAM状态的生成和特性.

主要方法:

基于环状光束传播的拉盖尔-高斯 (LG0,n) 模式激发条件的理论确定.
使用Tm:Y2O3陶激光,进行OAM状态的实验生成.
使用Lyot过器 (LF) 实现的波长调整.

主要成果:

在2μm范围内成功生成波长可调整的OAM状态 (dakdakdakdakdak和dakdakdakdakdak)
证明在波长调整过程中,标尺光学的空间特性得到保留.
确认生产强大而紧的波长调节结构光源的可行性.

结论:

开发的TM-bulk激光器为可调节波长的结构光源提供了一个新的来源,具有可控制的OAM.
这项技术对推进光通信,量子光学和超分辨率显微镜具有重大前景.

更多相关视频

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

相关概念视频

Atomic Nuclei: Larmor Precession Frequency

Atomic Nuclei: Larmor Precession Frequency

The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession,...