Título
Q-switching of waveguide lasers based on graphene/WS_2 van der Waals heterostructure
Autor(es)
Palabras clave
Femtosecond laser writing
Laser materials
Laser operation
Laser sources
Laser systems
Ultrafast devices
Fecha de publicación
2017-10
Citación
Ziqi Li, Chen Cheng, Ningning Dong, Carolina Romero, Qingming Lu, Jun Wang, Javier Rodríguez Vázquez de Aldana, Yang Tan, and Feng Chen, "Q-switching of waveguide lasers based on graphene/WS2 van der Waals heterostructure," Photon. Res. 5, 406-410 (2017)
Resumen
We report on the operation of passively 𝑄-switched waveguide lasers at 1 μm wavelength based on a graphene/WS2
heterostructure as a saturable absorber (SA). The gain medium is a crystalline Nd:YVO4 cladding waveguide produced by femtosecond laser writing. The nanosecond waveguide laser operation at 1064 nm has been realized with the maximum average output power of 275 mW and slope efficiency of 37%. In comparison with the systems based on single WS2 or graphene SA, the lasing 𝑄-switched by a graphene/WS2 heterostructure SA possesses advantages of a higher pulse energy and enhanced slope efficiency, indicating the promising applications of van der Waals heterostructures for ultrafast photonic device
URI
DOI
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