Ternary Chalcogenide Ta2NiTe5 as Broadband Saturable Absorber for Passively Q‐Switched Pulse Generation (Advanced Optical Materials 7/2024)

Novel 2D Ternary Chalcogenide as Saturable Absorber Article number 2301261 highlights a groundbreaking 2D ternary chalcogenide saturable absorber (SA), Ta2NiTe5, synthesized using the liquid‐phase exfoliation technique. Shubin Lu, Qiao Wen, and co‐workers explore the nonlinear optical properties of Ta2NiTe5 nanosheets, spanning from 500 nm to 3.0 µm, through P‐scan and open‐aperture Z‐scan methods. Additionally, the authors successfully demonstrate stable passively Q‐switched lasers utilizing the Ta2NiTe5‐SA device at wavelengths of 1.0, 2.0, and 3.0 µm. These findings not only reaffirm the promising potential of 2D ternary chalcogenides as SAs for achieving pulsed lasers across a broad spectrum, but also pave the way for advancing their potential applications in optoelectronic devices.