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

Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

You might also read

Related Articles

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

Sort by

Same author

Ultracompact on-chip coiled waveguide-integrated photodetectors enabled by 2D materials with enhanced responsivity.

Nanoscale·2025

Same author

High-responsivity InSe/TaSe<sub>2</sub> photodetectors integrated on low-loss silicon nitride waveguides.

Nanoscale advances·2025

Same author

A chiral microchip laser using anisotropic grating mirrors for single mode emission.

Nanophotonics (Berlin, Germany)·2024

Same author

High-power thin-disk lasers emitting beams with axially-symmetric polarizations.

Nanophotonics (Berlin, Germany)·2024

Same author

Brilliant quantum dots' photoluminescence from a dual-resonance plasmonic grating.

Optics express·2024

Same author

Enhanced sensing performance from trapezoidal metallic gratings fabricated by laser interference lithography.

Optics letters·2022

Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026

Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026

Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026

Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026

Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026

Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

A double-sided grating coupler for thin light guides.

Samuli Siitonen, Pasi Laakkonen, Jani Tervo

|June 18, 2009

Summary

This summary is machine-generated.

This study introduces a novel double-sided grating method for efficient light beam coupling into light guides. This technique significantly enhances light incoupling efficiency compared to traditional single-grating approaches.

More Related Videos

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Related Experiment Videos

Last Updated: Jun 22, 2026

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Area of Science:

Optics and Photonics
Materials Science

Background:

Efficiently coupling light into thin light guides is crucial for various optical applications.
Conventional methods using single gratings often suffer from limited incoupling efficiency.

Purpose of the Study:

To present a simple and efficient solution for coupling collimated light beams into thin light guides.
To demonstrate the superior performance of a double-sided grating approach over conventional methods.

Main Methods:

Fabrication of two gratings with perpendicular lines on opposite surfaces of a light guide.
Numerical simulations to optimize the double-sided grating design for unpolarized light.
Experimental verification using UV-replicated binary gratings on a PMMA foil.

Main Results:

Numerical simulations predict 2-7 times higher incoupling efficiencies for the double-sided solution.
The optimized double-sided design shows significant improvements for unpolarized light.
Experimental validation confirms the enhanced performance.

Conclusions:

The presented double-sided grating solution offers a simple and highly efficient method for light beam incoupling.
This approach overcomes the limitations of conventional single-grating techniques.
The findings have potential applications in optical devices and systems requiring efficient light management.