Abstract
We report the direct generation of 75-femosecond pulses from a stretched-pulse fiber ring laser using the nonlinear polarization rotation mode-locking mechanism. As the gain media in the laser, the high-doped erbium-doped fiber working at positive dispersion was used to compensate the negative dispersion of standard single mode fiber. Under a 125 mW pump power, the average output power was higher than 15 mW, with a 25.9 MHz repetition rate and 53 nm spectrum width. Meanwhile, the pulse energy was greatly improved, which could reach 0.6 nJ. The laser easily achieved mode-locking and ran stably at room temperature. All-fiber construction makes it compactable and portable.
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Supported by the National Natural Science Foundation of China (Grant No. 60577048) and the Science and Technology Committee of Shanghai Municipal (Grant No. 04DZ14001)
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Deng, D., Zhan, L. & Xia, Y. 75-femtosecond all-fiber ultrashort pulse laser. Chin. Sci. Bull. 53, 1937–1940 (2008). https://doi.org/10.1007/s11434-008-0226-4
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DOI: https://doi.org/10.1007/s11434-008-0226-4