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Continuous-wave Raman laser in H(2).

J K Brasseur, K S Repasky, J L Carlsten

    Optics Letters
    |December 18, 2007
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed the first continuous-wave Raman laser using hydrogen (H2). This new laser technology is diode-pumpable and achieves high photon conversion efficiency, opening doors for tunable laser applications.

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    Area of Science:

    • Atomic, Molecular and Chemical Physics
    • Optics and Photonics

    Background:

    • High-finesse optical cavities enable new laser functionalities.
    • Broadly tunable, continuous-wave (CW) lasers are crucial for various scientific applications.

    Purpose of the Study:

    • To present the design and preliminary characterization of the first CW Raman laser in hydrogen (H2).
    • To demonstrate the feasibility of diode laser pumping for CW Raman lasers.

    Main Methods:

    • Utilized high-finesse cavities for Raman laser design.
    • Employed hydrogen (H2) as the Raman gain medium.
    • Characterized laser performance including threshold and conversion efficiency.

    Main Results:

    • Achieved a low threshold of 2 mW of pump power, enabling diode laser pumping.

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  • Observed a maximum photon conversion efficiency of 35% at 7.6 mW of pump power.
  • Demonstrated the first CW Raman laser in H2.

    • Conclusions:

    • The developed H2 CW Raman laser is a significant advancement in tunable laser technology.
    • The low threshold and high efficiency suggest potential for practical applications.
    • This work paves the way for further development of broadly tunable CW Raman lasers.