Few-Layer Platinum Diselenide as a New Saturable Absorber for Ultrafast Fiber Lasers

ACS Applied Materials & Interfaces
Jian YuanQiaoliang Bao

Abstract

A multilayer platinum diselenide (PtSe2) film was experimentally demonstrated as a new type of saturable absorber with the capability to deliver robust dissipative solitons in a passively mode-locked fiber laser. The PtSe2 film synthesized by chemical vapor deposition was placed onto the ferule of a single mode optical fiber through a typical dry transfer process. The nonlinear optical measurements reveal efficient saturable absorption characteristics in terms of a large modulation depth (26%) and low saturable intensity (0.346 GW cm-2) at the wavelength of 1064 nm. An all-fiber ring cavity was built, in which the PtSe2 film was sandwiched between two ferules as the saturable absorber and Ytterbium-doped fiber was used as the optical gain medium. Robust dissipative soliton pulses with a 3 dB spectral bandwidth of 2.0 nm and a pulse duration of 470 ps centered at 1064.47 nm were successfully observed in the normal dispersion regime. Moreover, our mode-locked lasers also exhibit good long-term stability. Our finding suggests that multilayer PtSe2 may find potential applications in nonlinear optics and ultrafast photonics.

References

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Citations

Feb 9, 2019·Optics Express·Bin HuangShuangchun Wen
Nov 3, 2020·Nanoscale·Hee Jun ShinSangwan Sim
Nov 24, 2020·Advanced Materials·Gaozhong WangWerner J Blau
Dec 10, 2020·Nanomaterials·Ping Kwong ChengYuen Hong Tsang
Nov 6, 2020·Scientific Reports·Desman P GuloHsiang-Lin Liu
Feb 19, 2021·Nature Communications·Juan YuYanping Liu
Jun 23, 2021·Nanotechnology·Banglin CaoZegao Wang
Aug 25, 2020·Nano Letters·Yingwei WangXiangping Li
Nov 19, 2021·ACS Applied Materials & Interfaces·Safayet AhmedYuen Hong Tsang

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