Jove
Visualize
Contact Us

Related Experiment Videos

Noncollinear phase matching in fluorescence upconversion.

Hanju Rhee1, Taiha Joo

  • 1Division of Molecular and Life Sciences, Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, South Korea.

Optics Letters
|January 15, 2005
PubMed
Summary

We used noncollinear sum-frequency generation to improve time resolution in fluorescence upconversion experiments, overcoming group-velocity mismatch (GVM) and phase-front mismatch (PFM) limitations.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Coherent Proton Transfer in the Excited State of Salophen Driven by a Specific Low-Frequency Skeletal Vibration.

The journal of physical chemistry letters·2026
Same author

Ligand Counting and Size Determination of Quantum Dots Using Electronegative Matrix-Assisted Laser Desorption Ionization Mass Spectrometry.

Analytical chemistry·2026
Same author

Engineering the morphology of Mn(II)-chelated hybrid polyion nanocomplexes <i>via</i> tryptophan-directed assembly of double-hydrophilic block-copolymers for enhanced magnetic relaxation.

Nanoscale·2025
Same author

Understanding contrasting S<sub>2</sub> → S<sub>1</sub> internal conversion rates in boron-dipyrromethene derivatives <i>via</i> multi-configuration time-dependent hartree method.

Physical chemistry chemical physics : PCCP·2025
Same author

Single-dye calibration for accurate instrument response function in time-correlated single photon counting over the entire visible range.

The Review of scientific instruments·2025
Same author

Tracking nuclear wave packets in excited-state reactions via quantum mechanics/molecular dynamics simulations.

The Journal of chemical physics·2025
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

Area of Science:

  • Ultrafast spectroscopy
  • Nonlinear optics
  • Quantum optics

Background:

  • Group-velocity mismatch (GVM) limits time resolution in ultrafast experiments.
  • Phase-front mismatch (PFM) also degrades temporal resolution.
  • Fluorescence upconversion is a key technique for time-resolved measurements.

Purpose of the Study:

  • Investigate noncollinear sum-frequency generation (SFG) to overcome GVM.
  • Analyze the impact of GVM and PFM on time resolution.
  • Demonstrate an improved fluorescence upconversion apparatus.

Main Methods:

  • Time-resolved fluorescence upconversion experiments.
  • Noncollinear sum-frequency generation geometry.
  • Numerical calculations to study GVM and PFM effects.

Related Experiment Videos

Main Results:

  • Noncollinear geometry effectively minimizes group-velocity mismatch (GVM).
  • Phase-front mismatch (PFM) was analyzed and managed.
  • Achieved a time resolution better than 45 fs (FWHM).

Conclusions:

  • Noncollinear SFG is a viable strategy to enhance time resolution.
  • The developed apparatus offers superior temporal performance.
  • This advancement benefits ultrafast spectroscopic studies.