Fiber laser marking machine >✘≤$can also be called met ≥al laser marking machine. Be×↓✔↔cause it uses a fiber laser, which u↑πses rare-earth elementα✔♠←-doped glass fiber as •÷φthe gain medium, it is easy to form↓∏φ a high power density in the fiber un →der the action of the♣§  pump light, resulting in the laser en>★ ergy level of the las☆¶≥←er working material. ”, w♣☆hen a positive feedback®δ↕ loop (constituting a resonator) π"is properly added, t≥'<γhe laser oscillation output ca∞↑♦•n be formed. The lase♣£™r wavelength is 1064nm, which belong®♥∞s to infrared invisible light, and€₽ the absorption rate of metal  ÷∑materials for this wavelength is rel♥Ω₽atively high, so the fiber lase★±♦r marking machine is mainly used ≥♥δ®for metal marking.