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Related Experiment Video

Updated: Jun 19, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

16-fs, 1-microJ ultraviolet pulses generated by third-harmonic conversion in air.

S Backus, J Peatross, Z Zeek

    Optics Letters
    |October 31, 2009
    PubMed
    Summary
    This summary is machine-generated.

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    Researchers generated ultrashort ultraviolet light pulses using a Ti:sapphire laser. This simple method produces sub-20-femtosecond (fs) pulses with high average power, useful for various scientific applications.

    Area of Science:

    • Ultrafast optics
    • Laser physics
    • Nonlinear optics

    Background:

    • Generating ultrashort light pulses is crucial for studying ultrafast phenomena.
    • Existing methods for producing ultraviolet (UV) pulses can be complex or lack sufficient power.
    • Ti:sapphire laser systems are widely used for generating femtosecond pulses.

    Purpose of the Study:

    • To develop a simple and efficient method for generating sub-20-femtosecond (fs) ultraviolet (UV) light pulses.
    • To achieve useful average powers for practical applications.
    • To characterize the generated UV pulses.

    Main Methods:

    • Utilizing a kilohertz Ti:sapphire laser system.
    • Focusing a 22-femtosecond (fs), 1-millijoule (mJ) laser pulse in ambient air.

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    Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
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    Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

    Published on: August 6, 2018

    Related Experiment Videos

    Last Updated: Jun 19, 2026

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
    08:22

    Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

    Published on: August 6, 2018

  • Employing frequency-resolved optical gating (FROG) for pulse duration measurement.

    • Main Results:

    • Successfully generated ultraviolet pulses at a wavelength of 266 nm.
    • Achieved an energy of 1 microjoule (µJ) per pulse.
    • Obtained an average power of 1 milliwatt (mW).
    • Measured the pulse duration of the generated UV pulses to be 16 fs.

    Conclusions:

    • A straightforward method for generating sub-20-fs UV pulses with useful average power has been demonstrated.
    • The technique leverages a standard Ti:sapphire laser system and air as the nonlinear medium.
    • The generated 16-fs UV pulses at 266 nm open possibilities for advanced spectroscopic and nonlinear optical studies.