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Related Concept Videos

Modes of Standing Waves - I01:03

Modes of Standing Waves - I

A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This phenomenon...
Modes of Standing Waves: II01:04

Modes of Standing Waves: II

The starting point for expressing the modes of standing waves is understanding the boundary conditions that the waves must follow. The boundary conditions are derived from the physical understanding of how the standing waves are sustained, that is, how the vibrating particles of the medium behave at the boundaries imposed on them.
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end.
The Wave Nature of Light02:12

The Wave Nature of Light

The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for electronic transitions. As a result...

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Updated: Jun 22, 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

Polychromatic nonlinear surface modes generated by supercontinuum light.

Andrey A Sukhorukov, Dragomir N Neshev, Alexander Dreischuh

    Optics Express
    |June 17, 2009
    PubMed
    Summary
    This summary is machine-generated.

    We observed how polychromatic light reshapes spatially and spectrally when tunneling in nonlinear waveguide arrays. This study reveals new nonlinear surface modes, advancing optical physics research.

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    Multimodal Nonlinear Hyperspectral Chemical Imaging Using Line-Scanning Vibrational Sum-Frequency Generation Microscopy
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    Published on: December 1, 2023

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    Last Updated: Jun 22, 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

    Multimodal Nonlinear Hyperspectral Chemical Imaging Using Line-Scanning Vibrational Sum-Frequency Generation Microscopy
    08:49

    Multimodal Nonlinear Hyperspectral Chemical Imaging Using Line-Scanning Vibrational Sum-Frequency Generation Microscopy

    Published on: December 1, 2023

    Area of Science:

    • Nonlinear optics
    • Waveguide optics
    • Photonics

    Background:

    • Nonlinear waveguide arrays are crucial for optical signal processing.
    • Understanding light propagation in these arrays is key to developing advanced photonic devices.
    • Polychromatic light exhibits complex behaviors in nonlinear media.

    Purpose of the Study:

    • To investigate the propagation dynamics of polychromatic light in nonlinear waveguide arrays.
    • To describe the simultaneous spatial and spectral reshaping of light beams.
    • To experimentally verify theoretical predictions and observe novel optical phenomena.

    Main Methods:

    • Theoretical modeling of polychromatic light propagation.
    • Numerical simulations of beam propagation in nonlinear waveguide arrays.
    • Experimental investigation using controlled light sources and waveguide structures.

    Main Results:

    • Observed simultaneous spatial and spectral beam reshaping.
    • Demonstrated power and wavelength-dependent tunneling between waveguides.
    • Reported the first experimental observation of supercontinuum nonlinear surface modes.

    Conclusions:

    • Nonlinear waveguide arrays exhibit complex light manipulation capabilities.
    • Simultaneous spatial and spectral reshaping is a key feature of polychromatic light propagation.
    • The discovery of supercontinuum nonlinear surface modes opens new avenues for optical research.