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Related Experiment Video

Updated: Jun 19, 2026

Implementation of a Coherent Anti-Stokes Raman Scattering (CARS) System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope
12:54

Implementation of a Coherent Anti-Stokes Raman Scattering (CARS) System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

Published on: July 17, 2016

Single-frequency, injection-seeded Ti:sapphire ring laser with high temporal precision.

C E Hamilton

    Optics Letters
    |October 2, 2009
    PubMed
    Summary

    This study demonstrates a 40% efficient, injection-seeded Ti:sapphire ring laser. The laser produces a unidirectional, single-frequency output pulse with low temporal jitter and a near diffraction-limited beam profile.

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    Area of Science:

    • Laser Physics
    • Quantum Optics
    • Materials Science

    Background:

    • Ti:sapphire lasers are crucial for tunable, high-power laser generation.
    • Injection seeding offers a method to control laser output properties like frequency and directionality.
    • Achieving high efficiency and stability in pulsed laser systems is a persistent challenge.

    Purpose of the Study:

    • To develop and characterize an injection-seeded Ti:sapphire ring laser.
    • To evaluate the efficiency and output characteristics of the seeded laser system.
    • To demonstrate stable, single-frequency, pulsed laser output.

    Main Methods:

    • Constructed a three-mirror Ti:sapphire ring laser with an 11 cm cavity length.
    • Utilized a 784 nm single-mode laser diode for injection seeding.
    • Pumped the laser with a frequency-doubled Nd:YAG laser (532 nm).
    • Analyzed output pulse duration, temporal jitter, and spatial beam quality (M-squared).

    Main Results:

    • Achieved a laser efficiency of 40%.
    • Demonstrated unidirectional and single-frequency oscillation with injection seeding.
    • Obtained output pulses of 4 ns Full Width at Half Maximum (FWHM).
    • Measured temporal jitter less than +/-300 ps relative to the pump pulse.
    • Characterized the output beam with a near diffraction-limited spatial profile (M(2) < 1.1).

    Conclusions:

    • Injection seeding effectively controls the oscillation mode and direction in a Ti:sapphire ring laser.
    • The developed system provides efficient, stable, single-frequency pulsed laser output.
    • The laser performance metrics (efficiency, pulse quality, stability) are suitable for various spectroscopic and scientific applications.

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    Implementation of a Coherent Anti-Stokes Raman Scattering (CARS) System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope
    12:54

    Implementation of a Coherent Anti-Stokes Raman Scattering (CARS) System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

    Published on: July 17, 2016

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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