Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Limits with Oscillating Discontinuities

Limits with Oscillating Discontinuities

An oscillating discontinuity is a type of discontinuity in which a function’s values fluctuate infinitely often as the input approaches a particular point. Unlike jump discontinuities, where the function suddenly shifts between two values, or infinite discontinuities, where the function diverges without bound, an oscillating discontinuity arises from rapid back-and-forth variation. Because the function never stabilizes toward a single value, no finite limit exists at that point.One of the most...

Focusing of Light in the Eye

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

Properties of Laplace Transform-II

Properties of Laplace Transform-II

Time differentiation, convolution, integration, and periodicity are fundamental concepts in analyzing functions and signals over time. Each concept provides a unique perspective on how functions evolve, interact, and repeat, offering essential tools for various scientific and engineering applications.
Time differentiation involves analyzing the rate of change of a function over time. Mathematically, it is the derivative of a function with respect to time. This concept can be likened to tracking...

Convergence of Fourier Series

Convergence of Fourier Series

The Fourier series is a powerful mathematical tool for representing periodic signals as an infinite sum of complex exponentials. In practice, this infinite series is truncated to a finite number of terms, yielding a partial sum. This truncation makes the approximation of the signal feasible but introduces certain challenges, particularly near discontinuities, known as the Gibbs phenomenon.
The Gibbs phenomenon refers to the persistent oscillations and overshoots that occur near discontinuities...

Standing Waves in a Cavity

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Valley-Dependent Emission Patterns Enabled by Plasmonic Nanoantennas.

ACS nano·2026

Same author

Enhanced Photon-Pair Generation from a van der Waals Metasurface.

Nano letters·2025

Same author

Nonlinearity symmetry breaking for generating tunable quantum entanglement in semiconductor metasurfaces.

Science advances·2025

Same author

Metasurface-enabled small-satellite polarisation imaging.

Nanoscale advances·2025

Same author

Integrated generation of vortices and frequency conversion with metasurfaces.

Light, science & applications·2025

Same author

Inverse design of nonlinear metasurfaces for sum frequency generation.

Nanophotonics (Berlin, Germany)·2024

Search research articles

Related Experiment Video

Updated: Jun 8, 2026

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

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

Published on: February 28, 2016

Focusing-to-defocusing crossover in nonlinear periodic structures.

Francis H Bennet¹, Inés A Amuli, Andrey A Sukhorukov

¹Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, 0200 Australian Capital Territory, Canberra, Australia. fhb124@rsphysse.anu.edu.au

|October 5, 2010

Summary

Researchers observed a shift from nonlinear beam trapping to defocusing in 2D photonic structures by altering lattice modulation. This transition highlights a fundamental crossover in light transport mechanisms, with potential sensing applications.

More Related Videos

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Published on: March 31, 2022

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Related Experiment Videos

Last Updated: Jun 8, 2026

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

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

Published on: February 28, 2016

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Published on: March 31, 2022

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Area of Science:

Photonics
Nonlinear Optics
Materials Science

Background:

Periodic photonic structures are crucial for controlling light propagation.
Nonlinear optical effects in such structures can lead to complex light dynamics.
Understanding light transport mechanisms is key to developing novel optical devices.

Purpose of the Study:

To experimentally demonstrate the transition from nonlinear beam trapping to defocusing in 2D periodic photonic structures.
To investigate the crossover from discrete to continuous wave (cw) light transport mechanisms.
To explore potential sensing applications based on the observed phenomena.

Main Methods:

Fabrication of two-dimensional periodic photonic structures.
Experimental manipulation of lattice modulation depth.
Observation and analysis of nonlinear light propagation and beam behavior.
Varying input power and refractive index to study sensitivity.

Main Results:

A clear transition from nonlinear beam trapping to defocusing was observed by tuning the lattice modulation depth.
The study confirmed a fundamental crossover between discrete and cw light transport regimes.
At the threshold modulation, the output beam exhibited high sensitivity to changes in refractive index and power.

Conclusions:

The modulation depth of a periodic photonic lattice critically controls nonlinear light propagation dynamics.
The observed crossover in transport mechanisms offers new insights into light behavior in structured media.
The high sensitivity at the threshold modulation presents opportunities for developing advanced refractive index and temperature sensors.