Large-energy passively Q-switched Er-doped fiber laser based on CVD-Bi₂Se₃ as saturable absorber

Titanium Disulfide Based Saturable Absorber for Generating Passively Mode-Locked and Q-Switched Ultra-Fast Fiber Lasers

“…Due to the advantages of short pulse width, high peak power, simple structure, and excellent beam quality, pulsed fiber lasers have recently attracted significant attention because of their wide corresponding applications, such as medical treatment [ 1 , 2 ], fiber communications [ 3 , 4 ], environmental monitoring, and industry [ 5 , 6 , 7 ]. Passively mode-locked or Q-switched techniques are commonly-used efficient methods for generating ultra-fast pulsed lasers [ 8 , 9 , 10 , 11 ]. Passive techniques including nonlinear polarization rotation (NPR) [ 12 ], nonlinear amplifying loop mirror (NALM), and saturable absorber (SA) [ 13 ] are employed for demonstrating pulsed lasers operating from visible to mid-infrared optical band.…”

Palladium diselenide as a direct absorption saturable absorber for ultrafast mode-locked operations: from all anomalous dispersion to all normal dispersion

“…Especially, graphene has enormously promoted the development of mode-locked lasers due to its properties of wide absorption range, low saturation intensity, ultrafast recovery time and high damage threshold [12][13][14][15]. Under the encouragement of graphene, similar findings in other 2D nanomaterials such as topological insulators (TIs) [17][18][19][20], transition metal dichalcogenides (TMDs) [21][22][23][24][25][26][27][28][29][30][31][32][33][34], black phosphorus [35][36][37], MXenes [38,39], Xenes [40][41][42][43][44][45] and so on have been reported focusing their saturable absorption and laser propagation performance. Among them, TMDs exhibit significant essential applications in optoelectronic and biological fields [46][47][48].…”

Palladium selenide as a broadband saturable absorber for ultra-fast photonics

“…The emergency of two-dimensional (2D) layered materials provided exciting opportunities for the development of novel opto-electric, bio-medical, and energy devices [1][2][3][4][5][6][7][8][9][10][11][12][13]. Recently, novel ultra-fast optical devices such as Q-switchers, mode-lockers, optical switchers, and so on have been investigated extensively due to their excellent opto-electric characteristics including wide-absorption band, ultra-fast recovery time, high-damage threshold, etc.…”