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

Double Resonance Techniques: Overview

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...

Parallel Resonance

Parallel Resonance

The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:

Sound Waves: Resonance

Sound Waves: Resonance

Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...

Concept of Resonance and its Characteristics

Concept of Resonance and its Characteristics

If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not immune...

IR Absorption Frequency: Hybridization

IR Absorption Frequency: Hybridization

Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...

Atomic Nuclei: Larmor Precession Frequency

Atomic Nuclei: Larmor Precession Frequency

The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession, and the angular frequency...

You might also read

Related Articles

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

Sort by

Same author

Quartz Crystal Microbalance-Based Point-of-Care Testing Systems: Principles, Device Design, and Applications.

Analytical chemistry·2026

Same author

Synchronous wearable ultrasound for early detection of coronary and carotid artery comorbidity.

Science advances·2026

Same author

A Drive-Vibration Integrated Piezoelectric Actuator for Flexible Electrode Implantation.

Micromachines·2026

Same author

Synchronous detection of mechanical-electrical properties of 4T1 breast tumor tissues based on piezoelectric actuators.

Biosensors & bioelectronics·2026

Same author

Integrated Pneumatic-Auxiliary Sensing Array for Real-Time Elbow Joint Kinematics Tracking and Anomaly Prevention.

ACS applied materials & interfaces·2025

Same author

A dual encoder network with multiscale feature fusion and multiple pooling channel spatial attention for skin scar image segmentation.

Scientific reports·2025

Search research articles

Related Experiment Video

Updated: May 14, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Coherence-assisted resonance with sub-transit-limited linewidth.

Lei Feng¹, Pengxiong Li, Liang Jiang

¹Department of Physics, State Key Laboratory of Surface Physics, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China.

Physical Review Letters

|February 2, 2013

Summary

Researchers developed a new laser spectroscopy technique achieving ultra-narrow resonance linewidths, significantly below the transit limit. This breakthrough enhances precision for atomic, molecular, and solid-state spin system applications.

More Related Videos

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Related Experiment Videos

Last Updated: May 14, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Area of Science:

Quantum Optics
Laser Spectroscopy
Atomic Physics

Background:

Achieving ultra-narrow resonance linewidths is crucial for high-precision measurements.
The transit-limit traditionally restricts spectral resolution in many spectroscopic techniques.
Developing novel methods to overcome these limitations is an active area of research.

Purpose of the Study:

To demonstrate a novel approach for obtaining resonance linewidths below the transit limit.
To explore the potential of laser cross-correlation for enhanced spectral resolution.
To validate the technique's applicability in atomic, molecular, and solid-state spin systems.

Main Methods:

Utilizing the cross-correlation between induced intensity modulation of two lasers.
Targeting specific resonance levels, such as ground states in a proof-of-principle experiment.
Comparing experimental results with analytical models and numerical calculations.

Main Results:

Achieved a resonance linewidth 1/30th of the transit-limited width in a proof-of-principle experiment.
Demonstrated that the attainable linewidth is fundamentally limited only by laser shot noise.
Experimental findings qualitatively align with theoretical models and simulations.

Conclusions:

The demonstrated technique offers a significant advancement in achieving sub-transit-limited linewidths.
The method is easily implementable and broadly applicable to various quantum systems.
This approach has potential applications in high-precision spectroscopy, metrology, and sensing.