MoS2 nano-flake doped polyvinyl alcohol enabling polarized soliton mode-locking of a fiber laser

Hybrid mode-locking of non-polarized Er-doped fiber laser with nonlinear saturable absorption of MoS2 nano-flake doped ultrathin polyvinyl alcohol film is demonstrated to obtain 330-fs pulsewidth.

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Passively mode-locked in Er-doped fiber laser based on semi-metallic InBi saturable absorber

Journal of Physics D Applied Physics ◽

10.1088/1361-6463/ac378e ◽

2021 ◽

Author(s):

Jianwei Hu ◽

Rong Huang ◽

Ziqiao Wei ◽

Minru Wen ◽

Fugen Wu ◽

...

Keyword(s):

Fiber Laser ◽

Modulation Depth ◽

Mode Locking ◽

Nodal Line ◽

Saturable Absorption ◽

Optical Nonlinearities ◽

Passive Mode ◽

Central Wavelength ◽

Two Dimensional Materials ◽

Er Doped

Abstract Two-dimensional materials have drawn great interest for their applications in mode-locking owning to their unique optical nonlinearities. However, most of these 2D materials are semi-conductor. In this study, a new kind of semimetal Indium bismuth (InBi) is reported which is a topological nodal-line semimetal with exotic physical properties. The InBi nanomaterials was prepared through liquid phase exfoliation method with average thickness of 32.8 nm. The saturable absorption property was measured and passive mode-locking operation was achieved successfully in Er-doped fiber laser. It exhibits a modulation depth of 3.21%, a saturable intensity of 100 MW/cm2, and a pulse width about 859.97 fs corresponding to the central wavelength of 1562.27 nm and 3-dB bandwidth of 2.98 nm. The experimental results open a new avenue for the use of semimetals InBi nanomaterials in lasers and photonics applications.

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Coherent supercontinuum generation using Er-doped fiber laser of hybrid mode-locking

Optics Letters ◽

10.1364/ol.39.002986 ◽

2014 ◽

Vol 39 (10) ◽

pp. 2986 ◽

Cited By ~ 12

Author(s):

Seungman Kim ◽

Jiyong Park ◽

Seongheum Han ◽

Young-Jin Kim ◽

Seung-Woo Kim

Keyword(s):

Fiber Laser ◽

Mode Locking ◽

Supercontinuum Generation ◽

Hybrid Mode ◽

Er Doped

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Physical vapor deposition of large-scale PbSe films and its applications in pulsed fiber lasers

Nanophotonics ◽

10.1515/nanoph-2019-0380 ◽

2019 ◽

Vol 9 (8) ◽

pp. 2367-2375

Author(s):

Qun Gao ◽

Hao Yang ◽

Cuichen Hu ◽

Zhiwen He ◽

Hua Lu ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

Saturable Absorber ◽

Vapor Deposition ◽

Physical Vapor Deposition ◽

Large Scale ◽

Mode Locking ◽

Environmental Stability ◽

Saturable Absorption ◽

Optical Modulators ◽

Polyvinyl Alcohol Film

AbstractLead selenide (PbSe) is a new emerging semiconductor with layer-dependent bandgap that has attracted much interest due to its high infrared response and good environmental stability. We have prepared large-scale PbSe films with the area of 7 cm2 and thickness of 25 nm based on physical vapor deposition approach at 160°C. The PbSe films exhibit saturable absorption property at 1.55 μm and a polarization-sensitive saturable absorber is obtained by growing PbSe on D-shaped fiber. Single-pulse with the duration of 490 fs is generated at the pump of 12 mW and the mode-locking operation is maintained at the pump of 1500 mW, indicating the high damage threshold of the D-shaped fiber based saturable absorber. Two polarization-insensitive saturable absorbers are achieved by depositing PbSe on fiber facet and polyvinyl alcohol film, respectively. For fiber facet (polyvinyl alcohol film) based saturable absorber, the repetition rate of Q-switched pulses increases from 8.6 (16.3) kHz to 45.4 (59.2) kHz while the duration decreases from 7.92 (12) μs to 2.06 (3.12) μs by tuning the pump from 15 mW to 90 (60) mW. Such large-scale PbSe films possess features of low cost and high modulation ability, and can find important applications in infrared optical modulators and detectors.

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Passively harmonic mode-locked fiber laser based on ReS2 saturable absorber

Modern Physics Letters B ◽

10.1142/s0217984917502062 ◽

2017 ◽

Vol 31 (18) ◽

pp. 1750206 ◽

Cited By ~ 21

Author(s):

Feifei Lu

Keyword(s):

Pump Power ◽

Fiber Laser ◽

Output Power ◽

Saturable Absorber ◽

Repetition Rate ◽

Mode Locking ◽

High Repetition Rate ◽

Pulse Interval ◽

Saturable Absorption ◽

Harmonic Mode

We demonstrate the generation of harmonic mode-locking (HML) in an erbium-doped fiber laser with a microfiber-based rhenium disulfide (ReS2) saturable absorber (SA). Taking advantages of both saturable absorption and large third-order nonlinear effect of ReS2, HML pulse with 318.5 MHz repetition rate can be obtained, corresponding to 168th harmonic of fundamental repetition frequency of 1.896 MHz. When the pump power is increased gradually, the pulse interval remains constant, while the output power increases linearly. At the pump power of 450 mW, the output power is [Formula: see text]12 mW. The proposed high-repetition-rate pulse lasers would attract considerable attention due to its potential applications in soliton communications and frequency combs.

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Picosecond pulse generation at two wavelengths by simultaneous active mode locking in an Er-doped fiber laser with wide-bandwidth (>1 nm) nonchirped fiber Bragg gratings

10.1117/12.371261 ◽

1999 ◽

Author(s):

Olivier Deparis ◽

Roman V. Kiyan ◽

Ertan Salik ◽

Dmitry S. Starodubov ◽

Jack Feinberg ◽

...

Keyword(s):

Fiber Laser ◽

Fiber Bragg Gratings ◽

Bragg Gratings ◽

Mode Locking ◽

Picosecond Pulse ◽

Pulse Generation ◽

Wide Bandwidth ◽

Active Mode ◽

Er Doped

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Ternary chalcogenide Ta2NiS5 nanosheets for broadband pulse generation in ultrafast fiber lasers

Nanophotonics ◽

10.1515/nanoph-2019-0350 ◽

2019 ◽

Vol 9 (8) ◽

pp. 2341-2349

Author(s):

Mengyuan Ma ◽

Jiantian Zhang ◽

Yao Zhang ◽

Xiaoli Wang ◽

Junli Wang ◽

...

Keyword(s):

Fiber Laser ◽

Laser Pulses ◽

Mode Locking ◽

Pulse Generation ◽

Ultrafast Laser ◽

Transition Metal Dichalcogenide ◽

Ultrafast Laser Pulses ◽

Ternary Chalcogenide ◽

Cavity Structure ◽

Er Doped

AbstractIn this article, a high-quality saturable absorber (SA) based on a two-dimensional ternary chalcogenide Ta2NiS5 nanosheet has been successfully fabricated and used in 1- and 1.5-μm spectral regions to generate ultrafast laser pulses. The Ta2NiS5-based SA is fabricated by mechanical exfoliation and sandwiched between two fiber ferrules to form a fiber-compatible SA. On the basis of the twin-detector technique, nonlinear optical absorption of the Ta2NiS5-SA is characterized by 64.7% and 11.95% modulation depths with 1.3 and 0.72 MW/cm2 saturation intensities at 1028 and 1570 nm, respectively. When Ta2NiS5-SA is integrated into Yb- and Er-doped fiber laser cavities, stable self-starting Q-switched pulses are observed. Furthermore, by adjusting the cavity structure and optimizing dispersion in the cavity, we obtain hybrid mode-locking and mode-locking fiber laser operation at 1029 and 1569 nm, respectively. These results validate the performance of Ta2NiS5 as a broadband SA for the generation of ultrafast laser pulses, offering new opportunities of ternary transition-metal dichalcogenide alloys in future photonic devices.

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