This makes these new cables an attractive option for low-cost applications and also improves system simplicity when used with air-cooled fiber lasers.
RQB fiber optic cables incorporate quartz block technology, which allows the use of anti-reflective coatings to reduce total losses to less than 3%. These cables also feature a mode separator to prevent unwanted back reflections or pump light from propagating into the coating, as well as an integrated thermostat in the connector to protect against overheating. A safety lock continuously monitors the fiber's condition. RQB fiber optic cables are available with core diameters from 50 μm to 1000 μm, a numerical aperture of 0.20, and lengths from 5 m to 200 m.
The use of external water cooling extends the maximum RQB power to 3 kW. Furthermore, the option of a square cross-section core provides an essentially "flat" square beam with dimensions ranging from 100 μm x 100 μm to 1000 μm x 1000 μm.

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