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Simultaneous multiwavelength generation from a mode-locked all-solid-state Cr:forsterite laser.

T M Liu, S P Tai, H H Chang

    Optics Letters
    |November 28, 2007
    PubMed
    Summary
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    Researchers developed a multi-channel, mode-locked, all-solid-state Cr:forsterite laser. This laser generates 12 phase-locked channels with tunable pulse widths down to 1.8 ps.

    Area of Science:

    • Laser Physics
    • Quantum Optics
    • Solid-State Lasers

    Background:

    • Mode-locked lasers are crucial for generating ultrashort pulses.
    • Cr:forsterite lasers offer unique wavelength tunability in the near-infrared.
    • Generating multiple, phase-locked channels from a single oscillator presents significant challenges.

    Purpose of the Study:

    • To demonstrate a novel multiple-channel, mode-locked, all-solid-state Cr:forsterite laser.
    • To achieve phase-locked operation across multiple laser channels.
    • To investigate the tunability of pulse width within individual channels.

    Main Methods:

    • Utilized a Cr:forsterite laser gain medium in an all-solid-state configuration.
    • Incorporated an etalon within the laser cavity to enable multi-channel operation.

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  • Adjusted the etalon bandwidth to control pulse characteristics.

    • Main Results:

    • Successfully generated 12 phase-locked channels near 1230 nm.
    • Achieved pulse widths ranging from 9-19 picoseconds (ps) across the channels.
    • Demonstrated the capability to shorten the pulse width in a specific channel to 1.8 ps.
    • Obtained an average output power of 280 mW from the single laser oscillator.

    Conclusions:

    • The developed Cr:forsterite laser system effectively produces multiple, phase-locked output channels.
    • The etalon insertion provides a versatile method for controlling channel generation and pulse characteristics.
    • This technology holds potential for applications requiring multiple synchronized ultrashort pulses.