Femtosecond ultrafast pulse generation with high-quality 2H-TaS₂ nanosheets via top-down empirical approach

Abstract

Tantalum disulfide (TaS2), an emerging group VB transition metal dichalcogenide, is emerging as a prototype for revealing basic physical phenomena and developing practical applications.

Synthesis of Hexagonal Structured GaS Nanosheets for Robust Femtosecond Pulse Generation

“…A red circle aims to show the location of the core which shows that the fiber core has been completely covered by GaS nanosheets. The properties of the corresponding saturable absorbers in the 1.55 µm wavelength region were tested by a double arm detection technique [27]. The transmittance of an ideal saturable absorber can be described as follows:…”

“…Furthermore, the properties of material-based SA such as the linear loss, the modulation depth, and the working wavelength can also be optimized in the fabrication process [19]. To date, graphene [20,21], topological insulator (TI) [22][23][24], transition metal dichalcogenides (TMDCs) [25][26][27], Mxene [28,29], bismuthine [30][31][32], and black phosphorus (BP) [33] have been applied in ultrafast fiber lasers [34][35][36][37]. Previous studies mostly focus on how the pulse width can be greatly compressed, for example, adding positive dispersion fiber for dispersion management [38,39].…”

Mode-locking pulse generation based on lead-free halide perovskite CsCu2I3 micro-rods with high stability

“…[1][2][3][4] A saturable absorber (SA) is an important optical component to trigger pulsed operation. 5 Recently, the application of SAs based on novel low-dimensional materials for ultrafast pulse generation has been widely reported, such as graphene, [6][7][8] carbon nanotubes (CNTs), [9][10][11] topological insulators (TIs), [12][13][14][15] transition metal dichalcogenides (TMDs), [16][17][18][19] black phosphorus (BP), 20 and so on. [21][22][23][24][25] Most of them have unique optical and electrical properties.…”

Lab‐on‐Fiber Based on Optimized Gallium Selenide for Femtosecond Mode‐Locked Lasers and Fiber‐Compatible Photodetectors

“…), antimonene, bismuthene, and MXene are becoming building blocks for optical and photonics applications. [11][12][13][14][15] In addition to functional advantages, the structure characteristic of vdW materials is appropriate for optical fiber integration. Simultaneously, various laser-on-fiber (LOFs) are developing under the increasing demand for multifunctional optical and photonics devices.…”