Researchers have successfully developed the first fiber laser capable of generating femtosecond pulses within the visible spectrum, marking a significant milestone in laser technology. This innovation is particularly promising for applications in biomedical fields and material processing due to its ability to produce ultrashort and bright pulses at visible wavelengths. Historically, generating visible femtosecond pulses required complex setups; however, this new fiber laser offers a more efficient, compact, and cost-effective solution by leveraging a lanthanide-doped fluoride fiber. The laser emits red light at 635 nm with compressed pulses lasting 168 fs, delivering peak power of 0.73 kW and a repetition rate of 137 MHz, powered by a commercial blue laser diode.
The study, outlined in “Optics Letters,” highlights how this advancement addresses previous limitations in producing visible lasers with femtosecond capabilities. Future improvements aim to enhance the setup’s monolithic design, thereby increasing its reliability and efficiency. The researchers are also exploring ways to boost pulse energy and duration, which could further expand the range of applications, such as high-precision tissue ablation and advanced microscopy techniques. Overall, this development lays the groundwork for a new generation of reliable ultrafast laser systems.
