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Mechanical loss of laser-welded fused silica fibers
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic of the laser welding setup. Both the laser and the translation stage are computer controlled.

Image of FIG. 2.
FIG. 2.

Schematic of the ringdown experiment. The bob to which the fiber is welded is attached to another silica bob above it by a silica fiber.

Image of FIG. 3.
FIG. 3.

Fit of measured modal frequency data to the model of resonances of a circular cross-section, fused silica fiber. The fiber was measured to have a length of and diameter of . The continuous line is meant to simply guide the eye and has no significance between integers.

Image of FIG. 4.
FIG. 4.

Measured dissipation against resonance frequency of the welded fiber. The points are the measured loss angles, the dashed line is thermoelastic damping for a silica fiber, while the solid line shows the expected loss from thermoelastic damping and structural surface loss for the same diameter. The thermoelastic peak has been reduced by 0.65, in line with results from other measurements.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mechanical loss of laser-welded fused silica fibers