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Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear.
Nonlinear Pharmacokinetics: Causes of Nonlinearity01:22

Nonlinear Pharmacokinetics: Causes of Nonlinearity

Nonlinearity in drug pharmacokinetics is caused by various factors influencing how a drug is absorbed, distributed, metabolized, and excreted. Understanding these nonlinear processes is crucial for predicting drug behavior in the body and optimizing drug dosing regimens.
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...

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相关实验视频

Updated: Jul 4, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

一个循环的非线性光学.

E Goulielmakis1, M Schultze, M Hofstetter

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany. elgo@mpq.mpg.de

Science (New York, N.Y.)
|June 21, 2008
PubMed
概括
此摘要是机器生成的。

研究人员使用超短激光脉冲将光-物质相互作用限制在单个波周期内. 这一突破使得能够精确地控制电子运动和相互作用,并具有每秒分辨率.

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

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

相关实验视频

Last Updated: Jul 4, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

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

Published on: November 22, 2019

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

科学领域:

  • 非线性光学是一种非线性光学.
  • 强场物理学的强场物理.
  • 超快的科学超快的科学

背景情况:

  • 非线性光学对于光学科学和激光技术至关重要.
  • 在基本层面控制光物质相互作用是推动科学理解的关键.

研究的目的:

  • 为了将非线性光物质相互作用限制在单个光波周期中.
  • 为了证明这种限制对时间固定的和强场科学的实用性.
  • 为探测超快现象,产生隔离的每秒脉冲.

主要方法:

  • 利用了3.3 femtosecond,0.72微米的激光脉冲与一个受控的波形.
  • 在中央波周期的顶峰附近实现了原子电离.
  • 产生了分离的100亚图秒以下的极端紫外线 (XUV) 脉冲.

主要成果:

  • 已证明仅限于单个波周期的电离.
  • 产生了孤立的~80 eV XUV脉冲,具有~0.5 nJ 的能量.
  • 实现了大约10^-6.的转换效率.

结论:

  • 这种技术允许通过光场精确控制电子运动.
  • 能够研究电子-电子相互作用,其分辨率接近原子时间单位 (~24 亚秒).
  • 开辟了超快科学和强场物理研究的新途径.