Faseroptikbaugruppe für ein Lasersystem.

摘要

A laser system comprises a laser (500) whose output beam is delivered to a workpiece (504) by an optical fibre (502). A transducer (506) detects the power of light propagating in the cladding layer of fibre (502) at a position near its input end. The transducer (506) also strips out the light travelling in the cladding layer. The output of transducer (506) is divided by the output of a transducer (507), which detects the power of the output beam of laser (500), to produce a signal indicative of misalignment between the laser beam and the core of fibre (502) at the input face. A transducer (505) comprises a second fibre (508) optically coupled with the cladding layer of fibre (502). Light emitted from the ends of fibre (508) is detected by a pair of detectors (509, 510), whose outputs are indicated on displays (512, 514). Display (512) provides information on the integrity of transmissions of the laser beam through fibre (502). Display (514) provides information on the material processing operation performed on workpiece (504), and also on the focus of the beam onto the workpiece.