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164 fs mode-locked erbium-doped fiber laser based on tungsten ditelluride

Liu, Mengli ; Liu, Wenjun ; Liu, Ximei ; Ouyang, Yuyi ; Wei, Zhiyi

Nanophotonics (Berlin, Germany), 2020-09, Vol.9 (9), p.2763-2769 [Periódico revisado por pares]

Berlin: De Gruyter

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Título:
164 fs mode-locked erbium-doped fiber laser based on tungsten ditelluride
Autor: Liu, Mengli ; Liu, Wenjun ; Liu, Ximei ; Ouyang, Yuyi ; Wei, Zhiyi
Assuntos: Absorptivity ; Broadband ; Doped fibers ; Erbium ; Fiber lasers ; Laser applications ; Laser mode locking ; Lasers ; Magnetron sputtering ; mode-locked laser ; Relaxation time ; saturable absorbers ; Transition metal compounds ; Tungsten ; two-dimensional nanomaterials ; Ultrafast lasers
É parte de: Nanophotonics (Berlin, Germany), 2020-09, Vol.9 (9), p.2763-2769
Descrição: In recent years, the diversity of transition metal dichalcogenides (TMDs) has made them occupy the essential status in the exploration of saturable absorbing materials. WTe , also an important member of TMDs not only exhibits narrower band gap than MoS or WS , but also has fast relaxation time, thus it has advantages in the realization of broadband absorption and ultrashort pulses. In this work, a WTe saturable absorber (SA) fabricated by magnetron sputtering technology features nonlinear absorption coefficient of −3.78 × 10 cm/W and modulation depth of 37.95%. After integrating this WTe SA into the ring cavity, a 164 fs mode-locked laser is achieved at 1557.71 nm. The laser remains stable about 8 h with an output power of 36.7 mW. The results show the favorable saturable absorption properties of WTe , and further demonstrate the potential of WTe in the realization of ultrashort pulses, which indicates that WTe can be regarded as a possible candidate for future ultrafast lasers.
Editor: Berlin: De Gruyter
Idioma: Inglês

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164 fs mode-locked erbium-doped fiber laser based on tungsten ditelluride

Liu, Mengli ; Liu, Wenjun ; Liu, Ximei ; Ouyang, Yuyi ; Wei, Zhiyi

Berlin: De Gruyter

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