New Breakthrough in Fiber Laser Technology: 1 GHz Passively Q-Switched Mode-Locked Laser

New Breakthrough in Fiber Laser Technology: 1 GHz Passively Q-Switched Mode-Locked Laser

A passively Q-switched mode-locked fiber laser operating at a fundamental repetition rate of 1 GHz has been demonstrated using Yb-Mg-doped silica glass as a laser medium, overcoming photodarkening effects and offering potential applications in optical frequency combs, bio-optical imaging, light communication, material processing, and microfabrication.

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