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. 2020 Apr 8;7(11):2000058. doi: 10.1002/advs.202000058

Figure 5.

Figure 5

2D material‐based ultrafast lasers. a) Laser configuration constituting a ring cavity. b) Output pulse spectrum, centered at 1567 nm, with soliton sidebands. c) Autocorrelation trace of laser output and sech2 fitting curve. Reproduced with permission.[ 7 ] Copyright 2009, Wiley‐VCH. d) Schematic diagram of the passively Q‐switched pulse fiber laser on the basis of WSe2 and MoSe2 SAs. e) Optical spectrum of passively Q‐switched pulse fiber laser based on the WSe2 SAs. f) Single pulse sequence at maximum pump power of 680 mW. Reproduced with permission.[ 68 ] Copyright 2018, OSA Publishing. g) Schematic illustration of the ring cavity of the Q‐switched fiber laser based on BP SAs. h) Optical spectrum of the Q‐switched fiber laser based on BP SAs. i) Pulse repetition rate and duration versus incident pump power. Reproduced with permission.[ 72 ] Copyright 2015, Wiley‐VCH. j) The schematic of the ring‐cavity erbium‐doped fiber laser incorporating the stacked Ti3CNTx SAs. k) Optical spectrum of laser output and sech2 fitting curve. l) Autocorrelation trace of laser output and sech2 fitting curve. Reproduced with permission.[ 78 ] Copyright 2017, Wiley‐VCH.