Abstract

Mamyshev oscillators have pushed the frontiers in output parameters of ytterbium- and erbium-based ultrafast fiber oscillators in the spectral region around 1 µm and 1.5 µm within the last few years tremendously. In order to expand the superior performance toward the 2 µm spectral region, we present in this Letter an experimental investigation of the generation of high-energy pulses by a thulium-doped fiber Mamyshev oscillator. Generating highly energetic pulses is enabled by a tailored redshifted gain spectrum in a highly doped double-clad fiber. The oscillator emits pulses with an energy of up to 15 nJ, which can be compressed to 140 fs.

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Mode-locked pulses from a Thulium-doped fiber Mamyshev oscillator

Paul Repgen, Benedikt Schuhbauer, Moritz Hinkelmann, Dieter Wandt, Andreas Wienke, Uwe Morgner, Jörg Neumann, and Dietmar Kracht
Opt. Express 28(9) 13837-13844 (2020)

Ultrafast thulium-doped fiber-oscillator with pulse energy of 4.3 nJ

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Sub-50 fs, µJ-level pulses from a Mamyshev oscillator–amplifier system

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Opt. Lett. 44(24) 5973-5976 (2019)

Femtosecond Mamyshev fiber oscillator started by a passively Q-switched microchip laser

Sara Pizzurro, Riccardo Gotti, Luca Carrà, Giuliano Piccinno, Antonio Agnesi, and Federico Pirzio
Opt. Lett. 47(8) 1960-1963 (2022)

Generation of 8  nJ pulses from a normal-dispersion thulium fiber laser

Yuxing Tang, Andy Chong, and Frank W. Wise
Opt. Lett. 40(10) 2361-2364 (2015)