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Efficient laser diode pumped Nd lasers.

R Scheps

    Applied Optics
    |June 16, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Researchers achieved high power outputs from diode-pumped Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) and Neodymium-doped Barium Lithium Fluoride (Nd:BEL) lasers. Optimized Nd:YAG lasers exceeded 870 mW, while Nd:BEL lasers surpassed 635 mW, demonstrating efficient laser diode pumping.

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    Area of Science:

    • Laser Physics
    • Materials Science
    • Optoelectronics

    Background:

    • Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) and Neodymium-doped Barium Lithium Fluoride (Nd:BEL) are established laser gain media.
    • Diode-pumped solid-state (DPSS) lasers offer advantages in efficiency and compactness.
    • Optimizing laser performance requires careful consideration of gain medium properties and pumping schemes.

    Purpose of the Study:

    • To investigate and report the performance of laser diode axially pumped Nd:YAG and Nd:BEL lasers.
    • To quantify output power, slope efficiency, and electrical efficiency for both laser types.
    • To analyze the factors contributing to the overall laser efficiency.

    Main Methods:

    • Axial pumping of Nd:YAG and Nd:BEL laser crystals using laser diodes.

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  • Measurement of output power and efficiency parameters.
  • Theoretical modeling of overall laser efficiency based on contributing factors.

    • Main Results:

    • Nd:YAG lasers achieved over 870 mW output power with a 56% differential slope efficiency.
    • Nd:BEL lasers achieved over 635 mW output power with a 46% slope efficiency.
    • Electrical efficiencies of 13.0% for Nd:YAG and 9.5% for Nd:BEL were recorded.

    Conclusions:

    • Laser diode axial pumping is an effective method for achieving high performance in Nd:YAG and Nd:BEL lasers.
    • The experimental results show good agreement with the theoretical efficiency model.
    • These findings contribute to the development of efficient and powerful solid-state laser sources.