Hollow Waveguide (IMAGE)

U.S. National Science Foundation

Hollow Waveguide

Caption

This image depicts the experimental setup used to create a coherent version of the Roentgen tube in the soft X-ray region of the spectrum. When a long-wavelength, femtosecond laser is focused into this hollow waveguide filled with high-pressure helium gas, part of the laser is converted into an ultrafast, laser-like, X-ray beam.

Credit

Tenio Popmintchev, JILA and University of Colorado at Boulder

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