Laser beam focusing method and system for coupled water beam optical fiber
A focusing method and laser beam technology, applied in laser welding equipment, optics, light guides, etc., can solve the problems of poor beam quality, low water beam-beam coupling efficiency, and difficult water beam-beam coupling, etc., to reduce difficulty, Improved energy density and high reliability
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[0044] The present invention will be further described below in conjunction with examples, but the present invention is not limited to these examples.
[0045] A laser beam focusing system coupled with a water beam optical fiber, comprising a controller 1, a laser transmitter 2, a mirror 4, a laser beam collimating and expanding unit 5, a phase plate 6, and a positive / negative axis prism combination unit 7; Said laser beam collimation beam expansion unit 5, phase plate 6 and positive / negative axicon mirror combination unit 7 are coaxially arranged; said laser emitter 2 emits laser beam 3 to mirror 4 under the control of controller 1, said After the laser beam 3 is collimated and expanded by the laser beam collimation and expansion unit 5, it is incident on the phase plate 6 for phase modulation; the positive / negative axicon combination unit 7 is composed of a negative axicon 7-1 and a positive axicon 7-2, the light beam after the phase modulation is completed by the phase plat...
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