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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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    This study introduces a high-power, single-diode laser offering a cost-effective alternative to complex systems for atomic physics applications. The novel design achieves high power and spectral purity, enabling efficient atom collection.

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    Area of Science:

    • Atomic Physics
    • Laser Spectroscopy
    • Quantum Optics

    Background:

    • External-cavity diode lasers are widely used but can be expensive for high-power needs.
    • Complex setups involving seed lasers, injection-locking, and amplifiers increase cost and complexity.

    Purpose of the Study:

    • To present a high-power, single-diode laser design.
    • To offer a more affordable and simpler alternative for high-power laser applications in atomic physics.

    Main Methods:

    • Development of a novel single-diode laser architecture.
    • Characterization of laser specifications including power, linewidth, mode purity, and tuning range.
    • Demonstration of atom collection capabilities in a magneto-optical trap.

    Main Results:

    • Achieved >210 mW power, 100 ms-linewidth (427±7) kHz, >99% mode purity, 10 GHz mode-hop-free tuning, and 12 nm coarse tuning.
    • Demonstrated sufficient power to collect 10^10 Rubidium-87 atoms.
    • Outlined simple methods for spectral purity and linewidth determination.

    Conclusions:

    • The developed single-diode laser provides a high-power, cost-effective solution.
    • The laser design is suitable for atomic physics experiments, including magneto-optical traps.
    • The system is adaptable to other atomic species and diode laser architectures with appropriate modifications.