Thinnest Optical Waveguide - 1 (IMAGE)

University of California - San Diego

Thinnest Optical Waveguide - 1

Caption

Illustration of a monolayer of tungsten disulfide crystal suspended in air and patterned with a square array of nanoholes. Upon laser excitation, the monolayer crystal emits photoluminescence. A portion of this light couples into the monolayer crystal and is guided along the material. At the nanohole array, periodic modulation in the refractive index causes a small portion of the light to decay out of the plane of the material, allowing the light to be observed as guided mode resonance.

Credit

Cubukcu lab

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Please credit: Cubukcu lab

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