Saturable optical absorption in MoS2 nano-sheet optically deposited on the optical fiber facet

All-fiber Er-doped Q-Switched laser based on Tungsten Disulfide saturable absorber

“…In particular, it has been demonstrated that MoS 2 possess saturable absorption behavior [12] and pulse shaping ability of few-layer MoS 2 has been experimentally demonstrated [13][14][15]. Tungsten disulfide (WS 2 ) is another layered transition metal dichalcogenide, analogous to MoS 2 .…”

2D Saturable Absorbers for Fibre Lasers

“…To develop practical saturable absorber devices, the processed few-layer nano flakes can be integrated using a variety of optically-compatible strategies [30]. For fibre lasers applications, few-layer TMDs can be directly deposited on fibre ferrules using optical deposition or transferred to the tip of a fibre as a post-processing step [33][34][35][36]. Alternatively, they can be embedded in transparent polymer films to form compact and flexible SA devices [32,[37][38][39][40][41][42][43].…”

“…Using MoS 2 , such devices have been fabricated and characterized at ∼1 µm [32,44], ∼1.5 µm [34][35][36][37][39][40][41][42]45,48] and ∼2 µm [49] (corresponding to the gain bands for the principal active ions used in fibre lasers: ytterbium (Yb), erbium (Er) and thulium (Tm)), and a wide range of SA properties have been reported [30]. Saturable loss values have been reported from ∼1% [40] Figure 4 presents the optical characterization of a polymer composite including 6-7 MoSe 2 flakes.…”

“…The first MoS 2 Q-switched fibre laser was a Yb-doped fibre ring cavity, producing ∼2.7 µs pulses at 1068 nm with a repetition rate of 67 kHz and 0.5 mW of output power [38]. Since this initial report, further MoS 2 -based lasers have been demonstrated utilizing Yb active fibre at ∼1 µm [32,38,40], in addition to using Er fibre at ∼1.5 µm [35,36,40,41,48] and Tm fibre for ∼2 µm operation [40]. These results, in addition to reports of continuously tunable operation from 1030-1070 nm [32] and 1520-1568 nm [41], confirm the promising wideband saturable absorption of the material.…”

In-line chemical sensor based on C-type fiber and novel photonic crystal fibers with high sensitivity and fast dynamic response

“…Fiber optics are used for a variety of other applications, including optical sensors [1,2] and fiber lasers [3][4][5][6]. The use of fiber optics for sensing applications is an exciting growth area.…”