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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
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Visible femtosecond fiber laser
Optics Letters
|July 14, 2023
Summary
Researchers developed the first visible-spectrum femtosecond fiber laser. This breakthrough utilizes nonlinear polarization evolution in a Pr3+-doped fiber for ultrashort pulse generation.
Area of Science:
- Laser Physics
- Materials Science
Background:
- Femtosecond fiber lasers offer compact, high-brightness ultrashort pulses.
- Current femtosecond fiber lasers primarily operate outside the visible spectrum.
Purpose of the Study:
- To report the first femtosecond fiber laser operating in the visible spectrum.
- To demonstrate a novel approach for visible ultrashort pulse generation using fiber laser technology.
Main Methods:
- Utilized a passively mode-locked ring cavity laser.
- Employed nonlinear polarization evolution in a single-mode Pr3+-doped fluoride fiber.
- Operated the laser in an all-normal dispersion regime.
Main Results:
- Achieved femtosecond pulse generation at 635 nm.
- Compressed pulses exhibited a duration of 168 fs.
- Obtained a peak power of 0.73 kW at a repetition rate of 137 MHz.
Conclusions:
- Successfully demonstrated the first femtosecond fiber laser in the visible spectrum.
- The developed laser offers a new tool for applications requiring visible ultrashort pulses.
- Highlights the potential of Pr3+-doped fibers for visible femtosecond laser development.
