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Efficient Ho:YAG Laser Oscillates in Single Longitudinal Mode

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Breck Hitz

By minimizing thermal loading on a Ho:YAG laser rod, a research group at the University of Southampton in the UK has demonstrated an efficient high-power, single-frequency laser in the eye-safe 2-µm spectral region. Such sources are useful for remote sensing and spectroscopy and can be readily down-converted into the important 3- to 5-µm region using nonlinear optics. The acousto-optic modulator was slightly misaligned so that it introduced more loss to the wave traveling one direction around the ring resonator than to the counterpropagating wave. The additional loss was sufficient to...Read full article

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    Published: December 2004
    Glossary
    remote sensing
    Remote sensing is a method of data collection and observation where information about objects, areas, or phenomena on Earth's surface is gathered from a distance, typically using sensors onboard satellites, aircraft, drones, or other platforms. This technique enables the monitoring and analysis of Earth's surface and atmosphere without direct physical contact. Remote sensing systems capture electromagnetic radiation (such as visible light, infrared, microwave, or radio waves) reflected or...
    high-powerHo:YAG laser rodremote sensingResearch & Technologysingle-frequency laserspectroscopyUniversity of Southampton

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