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

Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

You might also read

Related Articles

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

Sort by
Same author

Short-pulse intracavity Raman laser.

Optics letters·2009
Same author

Resonant laser excitation in a two-level model: a nonlinear Schrödinger equation?

Optics letters·2009
Same author

Calculation of the temperature dependence of the multiphoton absorption spectrum of SF6.

Optics letters·2009
Same author

Comparison of multiple-photon excitation models.

Optics letters·2009
Same author

Single-photon transition moments in excited states of spherical-top molecules.

Optics letters·2009
Same author

High-J assignments in the 10.5-Mum SF6 spectrum: identification of the levels pumped by CO2 P(12) and P(22).

Optics letters·2009
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: Jun 20, 2026

Light Enhanced Hydrofluoric Acid Passivation: A Sensitive Technique for Detecting Bulk Silicon Defects
09:15

Light Enhanced Hydrofluoric Acid Passivation: A Sensitive Technique for Detecting Bulk Silicon Defects

Published on: January 4, 2016

Self-focusing in SF6.

J R Ackerhalt1, H W Galbraith, J C Goldstein

  • 1Los Alamos National Laboratory, Box 1663, Los Alamos, New Mexico 87545, USA.

Optics Letters
|August 25, 2009
PubMed
Summary
This summary is machine-generated.

The v(3) ladder is the primary cause of self-focusing in sulfur hexafluoride (SF(6)). This finding, based on a vibrational model, aligns with experimental data and improves understanding of nonlinear optical phenomena.

More Related Videos

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

Performing In Situ Closed-Cell Gas Reactions in the Transmission Electron Microscope
14:21

Performing In Situ Closed-Cell Gas Reactions in the Transmission Electron Microscope

Published on: July 24, 2021

Related Experiment Videos

Last Updated: Jun 20, 2026

Light Enhanced Hydrofluoric Acid Passivation: A Sensitive Technique for Detecting Bulk Silicon Defects
09:15

Light Enhanced Hydrofluoric Acid Passivation: A Sensitive Technique for Detecting Bulk Silicon Defects

Published on: January 4, 2016

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

Performing In Situ Closed-Cell Gas Reactions in the Transmission Electron Microscope
14:21

Performing In Situ Closed-Cell Gas Reactions in the Transmission Electron Microscope

Published on: July 24, 2021

Area of Science:

  • Nonlinear Optics
  • Molecular Spectroscopy
  • Quantum Optics

Background:

  • Self-focusing in gases like SF(6) is a critical nonlinear optical phenomenon.
  • Understanding the underlying molecular contributions to susceptibility is essential for predicting light-matter interactions.
  • Previous models have not fully elucidated the specific mechanisms driving self-focusing in SF(6).

Purpose of the Study:

  • To quantitatively determine the contributions of different molecular vibrational modes to the susceptibility responsible for self-focusing in SF(6).
  • To develop and validate a theoretical model for predicting self-focusing behavior in SF(6) at various laser energies.
  • To compare theoretical predictions with experimental self-focusing data.

Main Methods:

  • Developed a vibrational model of SF(6) as a classical triply degenerate anharmonic oscillator.
  • Incorporated rotational structure using a distribution of oscillators matching the v(3) fundamental spectrum.
  • Calculated the susceptibility, separating v(3)-ladder and quasi-continuum contributions.
  • Employed a two-dimensional diffraction-propagation code for quantitative comparison with experimental data.

Main Results:

  • The v(3)-ladder contribution to susceptibility dominates over the quasi-continuum contribution.
  • The v(3) ladder is identified as the sole mechanism responsible for self-focusing in SF(6).
  • Theoretical susceptibility curves show qualitative agreement with experimental data at various CO(2) laser frequencies.
  • Diffraction-propagation calculations demonstrate good quantitative agreement with experimental self-focusing data.

Conclusions:

  • The v(3) ladder mechanism is the dominant factor in SF(6) self-focusing.
  • The developed theoretical model accurately predicts self-focusing behavior in SF(6).
  • The study provides a robust framework for understanding and modeling nonlinear optical effects in molecular gases.