5 GHz fundamental repetition rate, wavelength tunable, all-fiber passively mode-locked Yb-fiber laser

Optics Express
H ChengZ Yang

Abstract

A passively mode-locked Yb3+-doped fiber laser with a fundamental repetition rate of 5 GHz and wavelength tunable performance is demonstrated. A piece of heavily Yb3+-doped phosphate fiber with a high net gain coefficient of 5.7 dB/cm, in conjunction with a fiber mirror by directly coating the SiO2/Ta2O5 dielectric films on a fiber ferrule is exploited for shortening the laser cavity to 2 cm. The mode-locked oscillator has a peak wavelength of 1058.7 nm, pulse duration of 2.6 ps, and the repetition rate signal has a high signal-to-noise ratio of 90 dB. Moreover, the wavelength of the oscillator is found to be continuously tuned from 1056.7 to 1060.9 nm by increasing the temperature of the laser cavity. Simultaneously, the repetition rate correspondingly decreases from 4.945874 to 4.945496 GHz. Furthermore, the long-term stability of the mode-locked operation in the ultrashort laser cavity is realized by exploiting temperature controls. This is, to the best of our knowledge, the highest fundamental pulse repetition rate for 1-μm mode-locked fiber lasers.

References

Jul 1, 1981·The Journal of Investigative Dermatology·R R Anderson, J A Parrish
Aug 15, 2003·Nature·Ursula Keller
Oct 12, 2010·Applied Optics·Hyunil ByunFranz X Kärtner
Apr 1, 2011·Optics Express·Amos Martinez, Shinji Yamashita
Sep 4, 2012·Optics Letters·Hung-Wen ChenFranz X Kärtner
Feb 6, 2013·Optics Letters·Chen LiZhigang Zhang
Apr 2, 2014·Optics Letters·Jinkang LimFranz X Kärtner

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Citations

Aug 19, 2018·Optics Express·Huihui ChengZhongmin Yang
May 16, 2018·Optics Letters·Fan WangLili Hu
May 15, 2020·IScience·Guoqing Chang, Zhiyi Wei
May 15, 2021·Optics Express·Wei LinZhongming Yang

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