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

Dielectric Polarization in a Capacitor

Dielectric Polarization in a Capacitor

The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...

You might also read

Related Articles

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

Sort by

Same author

Two diffusion photopolymer for sharp diffractive optical elements recording.

Optics letters·2015

Same author

Blue light from light-emitting diodes directed at a single eye elicits a dose-dependent suppression of melatonin in horses.

Veterinary journal (London, England : 1997)·2012

Same author

Binary blazed reflection gratings.

Applied optics·2010

Same author

Possibilities and limitations of space-variant holographic optical elements for switching networks and general interconnects.

Applied optics·2010

Same author

Concept for an optical bus-type interconnection network.

Applied optics·2010

Same author

Upper bound on the diffraction efficiency of phase-only fanout elements.

Applied optics·2010

Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026

Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026

Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026

Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026

Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026

Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 8, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

Dielectric binary blazed gratings.

H Haidner, J T Sheridan, N Streibl

|September 11, 2010

Summary

This summary is machine-generated.

Researchers analyzed artificial index gratings, optimizing their duty cycle for high blazed diffraction efficiency. Theoretical efficiencies reached 80% in a material with n=2 and 70% in silicon (n=3.4).

More Related Videos

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

Writing Bragg Gratings in Multicore Fibers

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Related Experiment Videos

Last Updated: Jun 8, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

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

Writing Bragg Gratings in Multicore Fibers

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Artificial index gratings utilize sub-wavelength binary microstructures.
The filling factor (duty cycle) critically influences grating performance.
Optimizing grating design is key for efficient light manipulation.

Purpose of the Study:

To analyze artificial index gratings based on their microstructure duty cycle.
To compare models for calculating optimal duty cycles for high blazed diffraction efficiency.
To predict theoretical diffraction efficiencies in different materials.

Main Methods:

Analysis of artificial index gratings as a function of filling factor.
Comparison of different theoretical models for calculating optimum duty cycles.
Modeling blazed binary grating designs in materials with varying refractive indices.

Main Results:

Theoretical diffraction efficiencies up to 80% were predicted for gratings in a material with a refractive index of 2.
Theoretical diffraction efficiencies up to 70% were predicted for gratings in silicon (refractive index of 3.4).
The study highlights the impact of material refractive index on achievable diffraction efficiency.

Conclusions:

Artificial index gratings offer a pathway to high blazed diffraction efficiency.
Optimized duty cycles are crucial for maximizing performance.
The findings have implications for optical device design using materials like silicon.