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

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

Interference and Superposition of Waves

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,...

You might also read

Related Articles

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

Sort by

Same author

Sample integrated laser for optical thickness measurement using single-shot interferometry.

Applied optics·2026

Same author

Dispersion-based interference fringe-order discrimination for long-range single-shot optical frequency comb interferometry.

Applied optics·2026

Same author

Direct Combinational Measurements of the Electron Density and Electric Field in Secondary Streamer Discharge under Atmospheric-Pressure Air.

Physical review letters·2026

Same author

Clinical, Electrophysiologic, and Pathologic Features of Anti-Contactin-Associated Protein 1 Autoimmune Nodopathy.

Neurology·2025

Same author

Prolonged Severe CD4+ Lymphocytopenia and Hypogammaglobulinemia in Patients With Evans' Syndrome: A Case Report.

Cureus·2025

Same author

Generation of stochastic electromagnetic beams based on modified degenerate cavity lasers.

Scientific reports·2024

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: May 15, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Multi-gigahertz frequency comb-based interferometry using frequency-variable supercontinuum generated by optical

Samuel Choi¹, Ken Kasiwagi, Yosuke Kasuya

¹Faculty of Engineering, Niigata University, 8050 Ikarashi 2, Niigata-shi, Japan. schoi@eng.niigata-u.ac.jp

|December 25, 2012

Summary

This summary is machine-generated.

A novel multi-gigahertz frequency comb interferometer enables high-speed 3D metrology. This system uses a unique supercontinuum light source for rapid profilometry and tomography measurements.

More Related Videos

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

Related Experiment Videos

Last Updated: May 15, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

Area of Science:

Optical Metrology
Advanced Photonics

Background:

Traditional interferometry methods often face limitations in speed and resolution for 3D measurements.
Developing advanced light sources is crucial for enhancing metrology capabilities.

Purpose of the Study:

To develop a multi-gigahertz frequency comb (MGFC)-based interferometer for high-speed profilometry and tomography.
To create a novel, stable, and frequency-variable supercontinuum (SC) light source for enhanced interferometric performance.

Main Methods:

Utilized an optical pulse synthesizer and highly nonlinear dispersion flattened fiber to generate a flattened and broadened SC light source.
Implemented an MGFC-based interferometer capable of frequency sweeping over 400 MHz.
Developed an envelope-only waveform detection method to reduce sampling points and increase measurement speed.

Main Results:

Achieved a stable interference output with a full width half maximum of 19 μm.
Demonstrated high-speed measurement by acquiring a full-field 3D image (320 × 256 × 300 pixels) in just 10 seconds.
Confirmed the effectiveness of the envelope-only waveform for rapid data acquisition.

Conclusions:

The developed MGFC-based interferometer with the novel SC light source is suitable for high-speed full-field 3D metrology.
This technology offers significant potential for applications requiring rapid and precise 3D imaging.
The envelope-only waveform approach drastically reduces sampling requirements, enabling faster measurements.