Graphene-based passively Q-switched 2 μm thulium-doped fiber laser

Generation of 35-nJ Nanosecond Pulse From a Passively Mode-Locked Tm, Ho-Codoped Fiber Laser With Graphene Saturable Absorber

“…F. Wang et al [15], [16] demonstrated passively Q-switched thulium fiber laser, using double-wall carbon nanotube and graphene-based saturable absorber. J. Liu et al [17] demonstrated stable pulses generation at 2 µm in a passively Q-switched thulium-doped fiber laser using a few layer graphene thin film. In this letter, we demonstrate experimentally that up to 35-nJ nanosecond pulse is generated in a passively mode-locked Tm, Ho-codoped fiber laser with graphene saturable absorber.…”

Black Phosphorus Q-Switched Large-Mode-Area Tm-Doped Fiber Laser

“…Passively Q-switched Tmdoped fiber lasers are favorable ways to generate high-energy pulses at 2 m, where two-dimension (2D) materials such as graphene, topological insulators (TIs), and transition metal dichalcogenides (TMDCs) are usually adopted as saturable absorbers (SAs) instead of commercial semiconductor saturable absorber mirror (SESAM) due to their low cost and easy fabrication [6][7][8][9][10][11][12][13].…”

Passively Q-switched fibre laser based on interaction of evanescent field in optical microfibre with graphene-oxide saturable absorber

“…So, in the case of evanescent-field interaction, a rolled carbon in the shape of carbon nanotubes has been deposited around a microfibre to achieve the pulse lasing mode [8]. Graphene is a two-dimensional carbon material which has attracted much attention of researchers and technologists in the fields of nanoelectronics and photonics in the last decades due to its unique properties, including low threshold levels of saturable absorption, ultrafast recovery times, and an ultra-broad wavelength-independent range of saturable absorption -from the visible region and down to the Terahertz one [9,10]. Q-switched pulse lasers have been successfully developed basing on graphene (see Refs.…”