Generation, optimization, and application of ultrashort femtosecond pulse in mode-locked fiber lasers

Optoelectronic characteristics and application of black phosphorus and its analogs

“…At present, there are two main fabrication methods, one is called the topdown method, and the other is called the bottom-up method [49][50][51]. The former includes mechanical exfoliation (ME) [52][53][54], liquid phase exfoliation (LPE) [27,43,55], electrochemical exfoliation [51,56], thermal annealing [57], plasma thinning [58,59] and sonochemical exfoliation method [60][61][62][63]; the latter includes chemical vapor deposition (CVD), pulsed laser deposition [64][65][66][67], hydrothermal method [66], van der Waals epitaxy [68,69] and magnetron sputtering deposition (MSD) [48,70]. We will briefly introduce three common preparation methods: ME, LPE and CVD.…”

“…From the fitting curve, we can clearly observe that the modulation depth, saturation intensity and non-saturable absorption are 7.5%, 0.35 MW/cm 2 , 57.5%, respectively. Strong aspiration of better performance has always been at the central issue of experts [40][41][42][43][44][45][46]. Li et al [47] obtained few-layer black phosphorus saturable absorbers with non-saturable absorption of 1% and saturation intensity of 221 MW/cm 2 .…”

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

“…Ultra-short pulse laser processing can also be used to create micro-nano textures due to the advantage of obtaining excellent and precise micro/nano textures as reported by Römer et al 121 The ultra-short laser pulses in picosecond and femtosecond range create wellcontrolled dual-scale roughness/textures without any thermal damage. 122 Mincuzzi et al 123 textured steel surface utilizing a high-repetition rate of femtosecond laser with speed up to 100 m/s. By varying the speed from 90 to 25 m/s, three types of morphologies were observed: ripples, microgrooves, and spikes.…”

A comparative study of chromatic dispersion compensation in 10 Gbps SMF and 40 Gbps OTDM systems using a cascaded Gaussian linear apodized chirped fibre Bragg grating design

“…The linearly chirped grating has found a special place in optics as a dispersion-correcting and compensating device [ 11 ]. Moreover, designs of chirped FBG have been proposed to generate efficient and optimized high power femtosecond pulses in mode-locked fibre lasers [ 12 ]. The chirped FBG have also been used in the study and experimental observation of optical rogue waves (also known as “freak waves”) [ 13 ].…”