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Dual-wavelength end-pumped Rb-Cs vapor lasers.

Shunyan Wang, Kang Dai, Juhong Han

    Applied Optics
    |November 22, 2018
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    Researchers developed a dual-wavelength diode-pumped alkali vapor laser (DPAL) for the first time. This novel laser system shows promise for future applications in laser communication and radar systems.

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    Area of Science:

    • Laser Physics
    • Quantum Optics
    • Materials Science

    Background:

    • Diode-pumped alkali vapor lasers (DPALs) are recognized for their high performance.
    • Limited research exists on DPALs capable of producing multiple wavelengths.
    • Developing multi-wavelength DPALs is crucial for expanding their technological applications.

    Purpose of the Study:

    • To theoretically investigate the impact of output characteristics on pump beam properties in a dual-wavelength Rb-Cs laser.
    • To experimentally construct a continuous-wave (CW) dual-wavelength DPAL.
    • To achieve hybrid CW-modulated output with two wavelengths from an alkali laser for the first time.

    Main Methods:

    • Utilized a kinetic model to theoretically analyze the effects of output features on Rb and Cs pump beam waist size and position.
    • Experimentally constructed an end-pumped dual-wavelength Rb-Cs laser.
    • Achieved and characterized hybrid continuous-wave (CW) and modulated output at two distinct wavelengths.

    Main Results:

    • Theoretical analysis provided insights into optimizing pump beam parameters for dual-wavelength operation.
    • Successful experimental construction of a CW dual-wavelength Rb-Cs laser.
    • Demonstrated, for the first time, hybrid CW-modulated output with two wavelengths in alkali lasers.

    Conclusions:

    • The study presents a significant advancement in multi-wavelength DPAL technology.
    • The developed dual-wavelength DPAL system offers potential for enhanced laser communication and ranging/radar applications.
    • This work paves the way for future research and development in advanced laser sources.