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5 March 2021 Dispersion-managed thulium-doped fiber Mamyshev oscillator
Paul Repgen, Benedikt Schuhbauer, Moritz Hinkelmann, Dieter Wandt, Andreas Wienke, Uwe Morgner, Jörg Neumann, Dietmar Kracht
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Proceedings Volume 11665, Fiber Lasers XVIII: Technology and Systems; 116650C (2021) https://doi.org/10.1117/12.2578470
Event: SPIE LASE, 2021, Online Only
Abstract
The principle of a Mamyshev oscillator depends on alternating spectral filtering between sections of spectral broadening by self-phase modulation. In the 2 µm wavelength range, this concept faces the difficulty that standard fibers are anomalous dispersive which limits the possible pulse energy to the pJ-regime without proper dispersion management. We applied ultra-high numerical aperture fibers with normal dispersion in order to achieve up-chirped pulses in an anomalous dispersive Thulium-doped gain fiber. With that design, we achieved mode-locked pulses with energies of 6.4 nJ and a compressed autocorrelation duration of 195 fs at a repetition rate of 16 MHz.
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Paul Repgen, Benedikt Schuhbauer, Moritz Hinkelmann, Dieter Wandt, Andreas Wienke, Uwe Morgner, Jörg Neumann, and Dietmar Kracht "Dispersion-managed thulium-doped fiber Mamyshev oscillator", Proc. SPIE 11665, Fiber Lasers XVIII: Technology and Systems, 116650C (5 March 2021); https://doi.org/10.1117/12.2578470
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KEYWORDS
Oscillators
Bandpass filters
Mode locking
Modulation
Optical filters
Picosecond phenomena
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