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Tunable optical parametric oscillators pumped by Ti:sapphire lasers.

H H Zenzie, P F Moulton

    Optics Letters
    |October 22, 2009
    PubMed
    Summary

    Tunable, pulsed Ti:sapphire lasers efficiently pump optical parametric oscillators. This research demonstrates significant output energy and high conversion efficiency using KTP and KNbO(3) crystals for tunable laser generation.

    Area of Science:

    • Nonlinear optics
    • Laser physics
    • Materials science

    Background:

    • Optical parametric oscillators (OPOs) are crucial for generating tunable laser light.
    • Ti:sapphire lasers offer tunable, pulsed output suitable for pumping nonlinear optical devices.
    • Efficiently coupling pump sources to OPOs is key for optimizing output parameters.

    Purpose of the Study:

    • To investigate the application of tunable, pulsed Ti:sapphire lasers as pump sources for OPOs.
    • To characterize the output performance of OPOs pumped by Ti:sapphire lasers using different nonlinear crystals.
    • To demonstrate high energy output and conversion efficiency in OPO systems.

    Main Methods:

    • Utilized a tunable, pulsed Ti:sapphire laser system.
    • Employed a 90-degree phase-matched KTP crystal for signal and idler generation.

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  • Demonstrated degenerate OPO operation using a KNbO(3) crystal.

    • Main Results:

    • Generated signal output from 1030-1280 nm and idler output from 2180-3030 nm.
    • Achieved 49 mJ of combined signal and idler output energy at a pump level of 110 mJ.
    • Observed a 44% conversion efficiency in degenerate OPO operation with KNbO(3).

    Conclusions:

    • Tunable, pulsed Ti:sapphire lasers are effective pump sources for OPOs.
    • The KTP and KNbO(3) crystals enable efficient generation of tunable laser output.
    • This work highlights the potential for high-performance OPO systems pumped by Ti:sapphire lasers.