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Related Experiment Video

Updated: Jun 22, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Imaging with a Terahertz quantum cascade laser.

Juraj Darmo, Vincas Tamosiunas, Gernot Fasching

    Optics Express
    |May 29, 2009
    PubMed
    Summary
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    Terahertz imaging using a quantum cascade laser offers high-resolution biomedical imaging. This technology reveals distinct biological tissue components, complementing traditional imaging methods.

    Area of Science:

    • Biomedical Imaging
    • Optoelectronics
    • Terahertz Spectroscopy

    Background:

    • Terahertz (THz) radiation offers unique contrast for biological tissues due to variations in water content, lipids, and proteins.
    • Conventional imaging modalities may not fully resolve certain tissue microstructures or compositional differences.

    Purpose of the Study:

    • To demonstrate the feasibility of biomedical imaging using a compact Terahertz quantum cascade laser (THz-QCL) system.
    • To evaluate the capability of THz imaging for resolving distinct regions within biological tissue samples.

    Main Methods:

    • Utilized a continuous-wave Terahertz quantum cascade laser as a coherent radiation source.
    • Developed a compact imaging system incorporating the THz-QCL.
    • Acquired images of a rat brain section at a wavelength of 3.4 THz.

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    Terahertz Imaging and Characterization Protocol for Freshly Excised Breast Cancer Tumors
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    Related Experiment Videos

    Last Updated: Jun 22, 2026

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
    09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    Terahertz Imaging and Characterization Protocol for Freshly Excised Breast Cancer Tumors
    08:56

    Terahertz Imaging and Characterization Protocol for Freshly Excised Breast Cancer Tumors

    Published on: April 5, 2020

    Main Results:

    • Successfully obtained high-resolution images of a rat brain section at 3.4 THz.
    • Demonstrated high contrast between different brain tissue regions, including those rich in fat, proteins, and fluid-filled cavities.
    • Resolved distinct anatomical features within the brain tissue.

    Conclusions:

    • Continuous-wave Terahertz imaging with THz-QCLs is a viable technique for biomedical applications.
    • The high contrast and resolution of THz imaging provide complementary information to white-light imaging.
    • Carefully selected THz wavelengths can yield valuable data on biological samples.