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相关概念视频

Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

120
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
120

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相关实验视频

Updated: Jul 28, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

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基于时间镜头的同步时间放大器,辅助相锁循环.

Yujia Li, Dongmei Huang, Yihuan Shi

    Optics letters
    |June 1, 2023
    PubMed
    概括

    我们开发了一种使用相锁循环 (PLL) 技术的同步时间镜头时间放大器,以精确地描述超快脉冲. 这种方法实现了高稳定性和200倍的信号脉冲放大,用于观察光纤激光器动态.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 超快激光科学 超快激光科学
    • 非线性光学是非线性光学.

    背景情况:

    • 描述超快脉冲对于理解非线性光学现象至关重要.
    • 现有的时间放大技术往往缺乏同步和稳定性.
    • 在超高速系统中观察动态过程需要高分辨率的时间测量工具.

    研究的目的:

    • 提出和演示一个基于时间镜头的同步时间放大器,用于超快脉冲表征.
    • 为了实现高的短期稳定性和显著的放大,用于一次性脉冲记录.
    • 为观察超快现象提供一种新的方法,例如光纤激光动力学.

    主要方法:

    • 使用相锁循环 (PLL) 同步和信号激光器的重复率.
    • 实现了反控制系统,配有比例积分 (PI) 电路和压电传感器 (PZT) 进行精确的同步.
    • 设计了,信号和车灯的分散,以实现时间放大.

    主要成果:

    • 实现激光重复率的活跃同步,确保时间稳定性.
    • 证明了信号脉冲的200倍放大.
    • 在连续的往返过程中成功记录了单次射击超快脉冲.

    更多相关视频

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
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    A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors
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    A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors

    Published on: May 30, 2016

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    相关实验视频

    Last Updated: Jul 28, 2025

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    9.9K
    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 12, 2014

    8.5K
    A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors
    11:15

    A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors

    Published on: May 30, 2016

    25.3K

    结论:

    • 同步时间镜头时放大器为超快脉冲表征提供了一种简单而稳定的方法.
    • 这种技术为像光纤激光器这样的超高速系统的动态提供了宝贵的见解.
    • 使用PLL辅助的方法提高了时间测量的可靠性和精度.