Metallic 2H-Tantalum Selenide Nanomaterials as Saturable Absorber for Dual-Wavelength Q-Switched Fiber Laser

A novel 2H-phase transition metal dichalcogenide (TMD)–tantalum selenide (TaSe2) with metallic bandgap structure is a potential photoelectric material. A band structure simulation of TaSe2 via ab initio method indicated its metallic property. An effective multilayered TaSe2 saturable absorber (SA) was fabricated using liquid-phase exfoliation and optically driven deposition. The prepared 2H–TaSe2 SA was successfully used for a dual-wavelength Q-switched fiber laser with the minimum pulse width of 2.95 μs and the maximum peak power of 64 W. The repetition rate of the maximum pulse energy of 89.9 kHz was at the level of 188.9 nJ. The metallic 2H–TaSe2 with satisfactory saturable absorbing capability is a promising candidate for pulsed laser applications.

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Highly Stable Passively Q-Switched Erbium-Doped All-Fiber Laser Based on Niobium Diselenide Saturable Absorber

Molecules ◽

10.3390/molecules26144303 ◽

2021 ◽

Vol 26 (14) ◽

pp. 4303

Author(s):

Ping Hu ◽

Jiajia Mao ◽

Hongkun Nie ◽

Ruihua Wang ◽

Baitao Zhang ◽

...

Keyword(s):

Fiber Laser ◽

Saturable Absorber ◽

Pulse Width ◽

Nonlinear Optical ◽

Modulation Depth ◽

Transition Metal Dichalcogenide ◽

Center Wavelength ◽

Niobium Diselenide ◽

Erbium Doped ◽

Layered Transition Metal

A saturable absorber (SA) based on niobium diselenide (NbSe2), which is a layered transition metal dichalcogenide (TMD) in the VB group, is fabricated by the optically driven deposition method, and the related nonlinear optical properties are characterized. The modulation depth, saturable intensity, and nonsaturable loss of the as-prepared NbSe2 nanosheet-based SA are measured to be 16.2%, 0.76 MW/cm2, and 14%, respectively. By using the as-fabricated NbSe2 SA, a highly stable, passively Q-switched, erbium-doped, all-fiber laser is realized. The obtained shortest pulse width is 1.49 μs, with a pulse energy of 48.33 nJ at a center wavelength of 1560.38 nm. As far as we know, this is the shortest pulse duration ever obtained by an NbSe2 SA in a Q-switched fiber laser.

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Dual-Wavelength Harmonically Mode-Locked Fiber Laser With Topological Insulator Saturable Absorber

IEEE Photonics Technology Letters ◽

10.1109/lpt.2014.2311101 ◽

2014 ◽

Vol 26 (10) ◽

pp. 983-986 ◽

Cited By ~ 101

Author(s):

Meng Liu ◽

Nian Zhao ◽

Hao Liu ◽

Xu-Wu Zheng ◽

Ai-Ping Luo ◽

...

Keyword(s):

Fiber Laser ◽

Saturable Absorber ◽

Topological Insulator ◽

Dual Wavelength

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Graphene slurry based passive Q-switcher in erbium doped fiber laser

Bulletin of Electrical Engineering and Informatics ◽

10.11591/eei.v8i4.1609 ◽

2019 ◽

Vol 8 (4) ◽

Author(s):

Siti Nur Fatin Zuikafly ◽

Nor Farhah Razak ◽

Rizuan Mohd Rosnan ◽

Sulaiman Wadi Harun ◽

Fauzan Ahmad

Keyword(s):

Pump Power ◽

Fiber Laser ◽

Pulse Width ◽

Peak Power ◽

Signal To Noise Ratio ◽

Pulsed Laser ◽

Laser Cavity ◽

Signal To Noise ◽

Maximum Pulse Energy ◽

Erbium Doped

In this work, a Graphene slurry based passive Q-switcher fabricated from Graphene-Polylactic acid (PLA) filament which is used for 3D printing. To produce the Graphene slurry, the diameter of the filament was reduced and Tetrahydrofuran (THF) was used to dissolve the PLA. The Graphene-THF suspension was drop cast to the end of a fiber ferrule and the THF then evaporated to develop Graphene slurry based SA which is integrated in fiber laser cavity. At threshold input pump power of 30.45 mW, a Q-switched Erbium-doped fiber laser (EDFL) can be observed with the wavelength centered at 1531.01 nm and this remained stable up to a pump power of 179.5 mW. As the pump power was increased gradually, an increase in the repetition rates was recorded from 42 kHz to 125 kHz, while the pulse width was reduced to 2.58 μs from 6.74 μs. The Q-switched laser yielded a maximum pulse energy and peak power of 11.68 nJ and 4.16 mW, respectively. The proposed Graphene slurry based saturable absorber also produced a signal-to-noise ratio of 44 dB indicating a stable Q-switched pulsed laser.

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