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

Confocal Fluorescence Microscopy

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

You might also read

Related Articles

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

Sort by

Same author

First Report of Amylostereum areolatum, the Fungal Symbiont of Sirex noctilio, on Pinus spp. in Canada.

Plant disease·2019

Same author

Ipsenol, Ipsdienol, Ethanol, and α-Pinene: Trap Lure Blend for Cerambycidae and Buprestidae (Coleoptera) in Pine Forests of Eastern North America.

Journal of economic entomology·2015

Same author

Pheromones in white pine cone beetle,Conophthorus coniperda (schwarz) (Coleoptera: Scolytidae).

Journal of chemical ecology·2013

Same author

Pheromones in red pine cone beetle,Conophthorus resinosae hopkins, and its synonym,C. banksianae McPherson (Coleoptera: Scolytidae).

Journal of chemical ecology·2013

Same author

Retracing the routes of introduction of invasive species: the case of the Sirex noctilio woodwasp.

Molecular ecology·2012

Same author

Natural enemies associated with Sirex noctilio (Hymenoptera: Siricidae) and S. nigricornis in Ontario, Canada.

Environmental entomology·2012

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 10, 2026

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions

Published on: January 30, 2018

Three-color laser-diode interferometer.

|August 14, 2010

Summary

This summary is machine-generated.

This study uses three wavelengths from laser diodes in a phase-modulated interferometer for precise absolute distance measurements. The system achieves 0.5 nm resolution over 360-microm intervals for optical surface profiling.

More Related Videos

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Related Experiment Videos

Last Updated: Jun 10, 2026

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions

Published on: January 30, 2018

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Area of Science:

Optics and Photonics
Metrology
Laser Physics

Background:

Multimode laser diodes produce complex optical spectra with numerous discrete wavelengths.
Phase-modulated interferometry is a technique for high-precision distance measurement.
Accurate measurement of micro-scale distances is crucial in optical engineering and surface metrology.

Purpose of the Study:

To demonstrate a novel method for absolute distance measurement using multiple wavelengths from laser diodes.
To achieve high-resolution displacement measurement and optical surface profiling.
To develop a compact interferometric system for practical applications.

Main Methods:

Utilizing three specific wavelengths from the combined spectrum of multimode laser diodes.
Employing a phase-modulated interferometer setup.
Coupling a three-wavelength source to a compact interferometric probe via single-mode fiber.

Main Results:

Successful measurement of absolute distances over 360-microm intervals.
Achieved a high resolution of 0.5 nm for distance measurements.
Demonstrated the system's capability for displacement measurement and optical surface profiling.

Conclusions:

The three-wavelength phase-modulated interferometer effectively measures absolute distances with nanometer resolution.
The developed system is suitable for precise displacement and optical surface characterization.
This approach offers a practical solution for high-accuracy metrology in optical applications.