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arXiv · 2512.20766

Watt-class injection-locked diode laser system at 399 nm for atomic physics

Rose Ranson·Yifan Zhou·Michael Hesford·Jack Drouin·Dhruv Azad·Michalis Panagiotou·Chris Overstreet
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Abstract

We demonstrate an injection-locked 399 nm laser system with up to 1 W output power and a locked power fraction of 0.57. The system consists of a high power, multimode diode laser that is seeded by 5 mW from a single-mode external cavity diode laser. The locked high-power laser inherits the frequency agility and linewidth of the seed laser with 3.9 kHz broadening. With active stabilization, the injection lock can be maintained for more than a day. We verify the utility of this system for atomic physics by performing spectroscopy of an ytterbium atomic beam.

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Rose Ranson, Yifan Zhou, Michael Hesford, Jack Drouin, Dhruv Azad, Michalis Panagiotou, Chris Overstreet. 2025-12-23. Watt-class injection-locked diode laser system at 399 nm for atomic physics. https://doi.org/10.1364/ol.589336

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