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Related Concept Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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We describe the reliable generation of non-Gaussian states of traveling optical fields, including single-photon states and coherent state superpositions, using a conditional preparation method operated on the non-classical light emitted by optical parametric oscillators. Type-I and type-II phase-matched oscillators are considered and common procedures, such as the required frequency filtering or the high-efficiency quantum state characterization by homodyning, are...
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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing06:16

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High-intensity femtosecond pulses of laser light can undergo cycles of Kerr self-focusing and plasma defocusing, propagating an intense sub-millimeter-diameter beam over long distances. We describe a technique for generating and using these filaments to perform remote imaging and sensing beyond the classical diffraction limits of linear...
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Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling (SAHM)12:26

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We demonstrate the utility of remotely sensed data and the newly developed Software for Assisted Habitat Modeling (SAHM) in predicting invasive species occurrence on the landscape. An ensemble of predictive models produced highly accurate maps of tamarisk (Tamarix spp.) invasion in Southeastern Colorado, USA when assessed with subsequent field...
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Related Experiment Video

Updated: Jan 19, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Open-path multi-species remote sensing with a broadband optical parametric oscillator.

Oguzhan Kara, Frazer Sweeney, Marius Rutkauskas

    Optics Express
    |September 13, 2019
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    This study demonstrates open-path remote sensing for monitoring industrial emissions. The technique achieves high sensitivity for detecting volatile organic compounds like methane and ethane at medium ranges.

    More Related Videos

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    Related Experiment Videos

    Last Updated: Jan 19, 2026

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    Area of Science:

    • Environmental monitoring
    • Spectroscopy
    • Atmospheric chemistry

    Background:

    • Fugitive emissions from industrial sites pose environmental risks.
    • Open-path remote sensing offers a method for monitoring these emissions.
    • Volatile organic compounds (VOCs) require accurate quantification.

    Purpose of the Study:

    • To develop and demonstrate a path-integrated sensing system for simultaneous VOC measurements.
    • To quantify hydrocarbon gas fluctuations above ambient levels.
    • To assess the system's sensitivity and range for industrial emission monitoring.

    Main Methods:

    • Utilized Fourier-transform spectroscopy with 0.05-cm-1 resolution.
    • Employed an ultrafast optical parametric oscillator as a broadband mid-infrared source (3.1-3.5 µm).
    • Performed path-integrated concentration measurements using a simple target at 70 m.

    Main Results:

    • Achieved simultaneous concentration measurements of water, methane, and ethane.
    • Observed real-time concentration changes by simulating a fugitive emission (2% methane in air).
    • Demonstrated a methane detection sensitivity of 595 ppb·m.

    Conclusions:

    • The developed system can resolve few-ppb concentrations of VOCs at 50-100 m ranges.
    • This technology is critical for effective monitoring of fugitive industrial emissions.
    • High signal-to-noise ratios enable accurate quantification of gas fluctuations.