Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Harmonic Mean01:09

Harmonic Mean

3.7K
The arithmetic mean is usually skewed towards the larger values in the data set. Therefore, to avoid this inherent bias towards smaller values, the harmonic mean is used.
Take the example of the speed of a car, which is the measure of the rate of distance traveled. If the vehicle traverses the same distance back-and-forth, its average speed equals the total distance traveled divided by the total time taken. However, if the car moves with varying speeds, then the arithmetic mean is more skewed...
3.7K
Pulse01:16

Pulse

2.0K
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
2.0K
Pulse01:05

Pulse

3.5K
The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
3.5K
Protein-protein Interfaces02:04

Protein-protein Interfaces

14.6K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.6K
Energy in Simple Harmonic Motion01:23

Energy in Simple Harmonic Motion

12.6K
To determine the energy of a simple harmonic oscillator, consider all the forms of energy it can have during its simple harmonic motion. According to Hooke's Law, the energy stored during the compression/stretching of a string in a simple harmonic oscillator is potential energy. As the simple harmonic oscillator has no dissipative forces, it also possesses kinetic energy. In the presence of conservative forces, both energies can interconvert during oscillation, but the total energy remains...
12.6K
Simple Harmonic Motion01:21

Simple Harmonic Motion

14.7K
Simple harmonic motion is the name given to oscillatory motion for a system where the net force can be described by Hooke's law. If the net force can be described by Hooke's law and there is no damping (by friction or other non-conservative forces), then a simple harmonic oscillator will oscillate with equal displacement on either side of the equilibrium position. To derive an equation for period and frequency, the equation of motion is used. The period of a simple harmonic oscillator is given...
14.7K

You might also read

Related Articles

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

Sort by
Same author

Design and operation of APEX-LD: A compact levitated dipole for a positron-electron experiment.

The Review of scientific instruments·2026
Same author

Time-resolved nonlinear optical spectroscopy of perovskites.

Optics express·2024
Same author

Femtosecond coherent Raman system with >75 dB dynamic range for probing vibration modes across 250-2400 cm<sup>-1</sup>.

Optics express·2022
Same author

Chiral and degenerate perfect absorption on exceptional surfaces.

Nature communications·2022
Same author

Markers of bacterial infection in the critically ill: a comparison of procalcitonin, C reactive protein and the neutrophil band count.

The Journal of infection·2012
Same author

ZnGeP2 optical parametric oscillator with 3.8-12.4-mum tunability.

Optics letters·2007

Related Experiment Video

Updated: Jan 25, 2026

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

7.3K

High spectral resolution second harmonic generation microspectroscopy at thin layer interfaces with broadband

M Mokim1, A Card1, F Ganikhanov1

  • 1Department of Physics, University of Rhode Island, 2 Lippitt Road, Kingston, RI 02881, USA.

Methodsx
|May 14, 2019
PubMed
Summary

We developed a new microspectroscopy method to measure nonlinear optical properties in single atomic layer materials. This technique uses broadband continuum pulses for enhanced precision and reveals subtle spectral features related to exciton transitions.

Keywords:
Broadband continuumOptical nonlinearity in semiconductorsSecond harmonic generation spectroscopySpectroscopy with continuum pulses

More Related Videos

Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

12.1K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.6K

Related Experiment Videos

Last Updated: Jan 25, 2026

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

7.3K
Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

12.1K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.6K

Area of Science:

  • Nonlinear optics
  • Materials science
  • Spectroscopy

Background:

  • Measuring the second-order nonlinear optical susceptibility (χ(2)) is crucial for understanding materials.
  • Traditional methods using point-by-point laser tuning have limitations in precision for χ(2) dispersion.
  • Single atomic layer materials possess unique electronic properties influenced by their reduced dimensionality.

Purpose of the Study:

  • To demonstrate an effective microspectroscopy technique for tracing χ(2) dispersion in single atomic layer materials.
  • To improve the precision and signal-to-noise ratio in nonlinear optical spectroscopy.
  • To investigate the relationship between spectral features and exciton transitions.

Main Methods:

  • Utilized single-shot second harmonic (SH) spectra detection and data normalization.
  • Employed broadband near-infrared femtosecond continuum pulses generated in photonic crystal fiber.
  • Achieved high spectral resolution (<2 meV) and low signal detection noise (<5-6% rms).

Main Results:

  • Successfully traced the dispersion of χ(2) in single atomic layer materials.
  • Observed fine sub-structure features in χ(2) spectra attributed to broadened resonances from exciton transitions.
  • Demonstrated superior spectral resolution and signal-to-noise ratio compared to previous methods.

Conclusions:

  • The continuum pulse technique offers a precise method for characterizing nonlinear optical properties of 2D materials.
  • SHG spectra provide insights into the band structure and exciton dynamics.
  • This technique is valuable for studying non-centrosymmetric semiconductors at room temperature.