Unravelling Saturable Absorption of Thulium-doped Fibres for New Level of Integrated Femtosecond Pulse Generation

The ultrashort pulse laser operation is crucially defined by engaging explicit modulators. Conventionally, they are laborious to incorporate into an all-fibre design or involve the design of sophisticated cavities. We exploit Thulium-doped fibre as the gain and simple, highly integrated saturable ab...

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Veröffentlicht in:	arXiv.org 2022-02
Hauptverfasser:	Kirsch, Dennis C, Cadier, Benoit, Thierry, Robin, Chernysheva, Maria
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Sprache:	eng
Schlagworte:	Absorbers Doped fibers Femtosecond pulses Lasers Modulators Thulium Yield point
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description	The ultrashort pulse laser operation is crucially defined by engaging explicit modulators. Conventionally, they are laborious to incorporate into an all-fibre design or involve the design of sophisticated cavities. We exploit Thulium-doped fibre as the gain and simple, highly integrated saturable absorber with a modulation depth of 23% and a high thermal damage threshold. Hence, pulses as short as 350fs carrying 1nJ energy at a repetition rate of 45MHz have been demonstrated. The laser average output power showed long-term stability with ~1%. The utilised concept of all-fibre saturable absorber provides technological grounds for a down-scaled, highly integrated laser architecture.
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subjects	Absorbers Doped fibers Femtosecond pulses Lasers Modulators Thulium Yield point
title	Unravelling Saturable Absorption of Thulium-doped Fibres for New Level of Integrated Femtosecond Pulse Generation
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