NIST Therapy for Ultraviolet Laser Beams: Hydrogen-treated Fibers (image)

National Institute of Standards and Technology (NIST)

Caption

This is a micrograph of an optical fiber that has been infused with hydrogen and cured with ultraviolet light (here shown transmitting violet laser light.) Fibers treated this way can transmit stable, high-power ultraviolet laser light for long periods of time, resisting the damage usually caused by UV light. The diameter of the pattern of air holes surrounding the core is 62.5 micrometers.

Credit

Slichter/NIST

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