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Related Experiment Video

Updated: Jun 19, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
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120-fs terawatt Ti:A1(2)O(3)/Cr:LiSrAlF(6) laser system.

W E White, J R Hunter, L Van Woerkom

    Optics Letters
    |October 2, 2009
    PubMed
    Summary

    We developed a new laser system using Ti:sapphire and Cr:LiSrAlF(6) to generate terawatt pulses. This system achieves 150-mJ compressed pulses with excellent beam quality at a 1-Hz repetition rate.

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    Area of Science:

    • Laser physics and engineering
    • Materials science for optical applications
    • High-power laser systems

    Background:

    • Development of high-power, ultrashort pulse lasers is crucial for various scientific applications.
    • Existing laser technologies face limitations in energy scaling and pulse quality.
    • Ti:sapphire and Cr:LiSrAlF(6) are promising materials for laser amplification.

    Purpose of the Study:

    • To develop a novel combined laser system for generating terawatt-class ultrashort pulses.
    • To investigate the performance of a cascaded amplification scheme using Ti:sapphire and Cr:LiSrAlF(6).
    • To assess the beam quality and pulse characteristics of the amplified pulses.

    Main Methods:

    • Utilized chirped-pulse amplification (CPA) in a Ti:sapphire laser to generate initial high-energy pulses.
    • Employed a flash-lamp-pumped Cr:LiSrAlF(6) amplifier for subsequent energy scaling.
    • Characterized pulse energy, duration, beam quality, and pulse shape.

    Main Results:

    • Achieved terawatt peak power with 120 fs pulse duration at a 1-Hz repetition rate.
    • Ti:sapphire amplification produced 45-mJ compressed pulses.
    • Cr:LiSrAlF(6) amplification increased pulse energy to 150 mJ without degrading beam quality or pulse shape.

    Conclusions:

    • The combined Ti:Al(2)O(3)/Cr:LiSrAlF(6) laser system successfully generates high-energy, ultrashort terawatt pulses.
    • The cascaded amplification approach is effective for scaling laser energy while maintaining excellent pulse characteristics.
    • This system offers a promising platform for advanced scientific research requiring high-power laser sources.

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