Bi₂O₂Te Nanosheets Saturable Absorber‐Based Passive Mode‐Locked Fiber Laser: From Soliton Molecules to Harmonic Soliton

Abstract

Figure 6. a) The optical spectrum with a central wavelength of 1559.5 nm and a modulation period of 1.31 nm, b) oscilloscope trace of the bound state pulse sequence, c) RF spectrum of the output pulse train, d) the autocorrelation trace of the 2nd order soliton molecules, e) optical spectra of the 3rd and 4th order soliton molecules, and f) autocorrelation trace of the 3rd and 4th order soliton molecules.

Investigations of the nonlinear optical properties of ZrGeTe4 nanosheets and their application in ultrafast photonics

“…This result is consistent with the previous report. 44 Thus, the 5 th HML pulse width is smaller than the CS-ML pulse width. Compared with the fundamental frequency, the 5 th harmonic order has a higher SNR and narrower pulse width, which displayed preferable stability.…”

Third-order optical nonlinearities of Nb4C3 MXene and its application as an ultra-broadband mode-locker

“…5 On the other hand, material-based SAs have gained much attention due to their environmental stability and self-starting nature. 6 Numerous nonlinear optical materials have been exploited as high-performing nonlinear optical materials for SA implementations, including carbon nanotubes, 7,8 graphene, 9,10 black phosphorus, 11,12 transition metal dichalcogenides (TMDCs), [13][14][15][16][17] topological insulators, [18][19][20] topological crystalline insulator, 21 MXene, 22 yttrium oxides, 23 perovskites, 24 bismuth oxychalcogenides, 25 germanene, 26 GaTe qunatum dots, 27 Ti 3 C 2 /Fe 3 O 4 composite, 28 telluride/TMDC heterostructure, 29 and graphdiyne/graphene heterostructures. 30 Notably, extensive investigations have been conducted to exploit 2-dimensional (2D) materials as base materials of SAs for mode-locked pulse generation.…”

Nonlinear Absorption and Refraction Properties of V4C3 MXene and its Use for an Ultra‐Broadband Saturable Absorber

“…Studies using nanomaterials, including carbon nanotubes [8] and gold nanorods [9] have been reported. Furthermore, SAs have been demonstrated by 2D materials including graphene, [10,11] black phosphorus, [12,13] transition metal chalcogenides, [14][15][16][17][18] and topological insulators (TIs), [19][20][21][22] antimonene, [23] bismuth oxychalcogenides, [24] and MXenes [25][26][27][28] have shown excellent nonlinear photon catalytic performance at NIR or SWIR wavelengths. In addition, 3D materials, including topological crystalline insulators [29] and metal-organic frameworks [30] have also been used for the demonstration of SAs.…”