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Cr:LiSr(0.8)Ca(0.2)AlF(6) tunable laser.

B H Chai, J L Lefaucheur, M Stalder

    Optics Letters
    |October 3, 2009
    PubMed
    Summary
    This summary is machine-generated.

    A novel chromium-doped fluoride crystal, Cr:LiSr(0.8)Ca(0.2)AlF(6), exhibits room-temperature laser operation. This new material offers tunable laser output between 750-950 nm, combining desirable properties of existing laser crystals.

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    Area of Science:

    • Materials Science
    • Solid-State Physics
    • Laser Technology

    Background:

    • Solid solutions of LiCaAlF(6) and LiSrAlF(6) are known laser materials.
    • Doping with chromium (Cr(3+)) ions can induce laser properties in fluoride crystals.
    • Developing new laser materials with improved or combined properties is crucial for advancing laser technology.

    Purpose of the Study:

    • To synthesize and characterize a new congruent melting compound intermediate between LiCaAlF(6) and LiSrAlF(6).
    • To investigate the laser performance of the new compound when doped with Cr(3+) ions.
    • To evaluate the potential of this new material for tunable, room-temperature laser applications.

    Main Methods:

    • Synthesis of a novel congruent melting compound.
    • Doping the compound with Cr(3+) ions to create Cr:LiSr(0.8)Ca(0.2)AlF(6).
    • Characterization of mechanical properties and laser performance (room-temperature lasing, spectral region, efficiency).

    Main Results:

    • A new congruent melting compound intermediate between LiCaAlF(6) and LiSrAlF(6) was successfully synthesized.
    • The Cr(3+)-doped compound, Cr:LiSr(0.8)Ca(0.2)AlF(6), demonstrated room-temperature lasing.
    • Lasing occurred in the spectral region from 750 to 950 nm with an overall efficiency of 1.25% using a flash-lamp-pumped rod.
    • The material exhibits mechanical properties comparable to Cr:LiCaAlF(6) and broadband tuning similar to Cr:LiSrAlF(6).

    Conclusions:

    • The new Cr-doped fluoride crystal, Cr:LiSr(0.8)Ca(0.2)AlF(6), is a promising material for tunable, room-temperature laser applications.
    • This material effectively combines desirable characteristics of both LiCaAlF(6) and LiSrAlF(6) based laser hosts.
    • The demonstrated lasing performance indicates its potential for practical laser systems.