"Groundbreaking Achievement: Researchers Unveil Visible Wavelength Femtosecond Fiber Laser"
Researchers have developed the first fiber laser capable of producing femtosecond pulses in the visible range of the electromagnetic spectrum. The laser, based on a lanthanide-doped fluoride fiber, emits red light at 635 nm and achieves compressed pulses with a duration of 168 fs. This breakthrough paves the way for reliable, efficient, and compact ultrafast lasers that could have applications in biomedical fields such as high-precision tissue ablation and two-photon excitation microscopy, as well as in material processing.