Analytical thermal modeling of graphene-clad microfiber as a saturable absorber in ultrafast fiber lasers

Ashoori, Vahid; Shayganmanesh, Mahdi

doi:10.1007/s00340-019-7147-6

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…In general, a PAMS is structured as follows: a metallic resonators layer, a subwavelengththick dielectric layer and a highly reflective layer. [6] A perfect absorber (PA) has a unity absorption band in gigahertz, [7] terahertz, [8] visible light, [9] or infrared bands. [10] Many narrowband metasurface absorbers have been proposed, including steering, [11] focusing, [12] total absorption, [13] solar photovoltaic cells, [14] heat radiations, [15] photo-detections, [16] and so on.…”

Section: Introductionmentioning

confidence: 99%

Narrowband perfect terahertz absorber based on polar-dielectrics metasurface*

Zhao

Zhou

et al. 2020

Chinese Phys. B

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We theoretically propose a narrowband perfect absorber metasurface (PAMS) based on surface phonon polaritons in the terahertz range. The PAMS has unit cell consisting of a silver biarc on the top, a thin polar-dielectric in the middle and a silver layer at the bottom. The phonon polaritons are excited at the interface between the silver biarc and the polar dielectric, and enhance the absorption of the PAMS. The absorption peak is at 36.813 μm and the full width half maximum (FWHM) is nearly 36 nm, independent of the polarization and incidence angle. The electric fields are located at the split of the biarc silver layer and the quality factor Q is 1150. The FWHM decreases with the decreasing split width. When the thickness of the bottom layer is larger than 50 nm, the narrow band and high absorption are insensitive to the thickness of those layers. The designed absorber may have useful applications in terahertz spectra such as energy harvesting, thermal emitter, and sensing.

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Section: Introductionmentioning

confidence: 99%

Narrowband perfect terahertz absorber based on polar-dielectrics metasurface*

Zhao

Zhou

et al. 2020

Chinese Phys. B

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Pulse compression in graphene-clad microfiber as a saturable absorber in mode-locked fiber lasers: modeling and analysis

Ashoori

Shayganmanesh

2019

Appl. Phys. B

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Realization of high-performance tri-layer graphene saturable absorber mirror fabricated via a one-step transfer process

et al. 2020

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Graphene, as a saturable absorber (SA), has attracted much attention for its application in ultrashort pulse fiber lasers due to its ultrafast interband carrier relaxation and ultra-broadband wavelength operation. Nevertheless, during the stacking process of monolayer graphene layer, the induced nonuniform contact at the interface of graphene layers deteriorate the device performance. Herein, we report the fabrication of graphene saturable absorber mirrors (SAMs) via a one-step transfer process and the realization of the much enlarged modulation depth and the much reduced nonsaturable loss with tri-layer graphene (TLG) than single-layer graphene (SLG) due to the improved uniform contact at the interface. Moreover, the operation of 1550 nm mode-locked Er-doped fiber laser with the TLG SAM exhibits excellent output characteristics of the maximum output power of 9.9 mW, a slope efficiency of 2.4% and a pulse width of 714 fs. Our findings are expected to pave the way toward high-performance ultrashort pulse fiber lasers based on graphene SAs.

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Analytical thermal modeling of graphene-clad microfiber as a saturable absorber in ultrafast fiber lasers

Cited by 3 publications

References 24 publications

Narrowband perfect terahertz absorber based on polar-dielectrics metasurface*

Narrowband perfect terahertz absorber based on polar-dielectrics metasurface*

Pulse compression in graphene-clad microfiber as a saturable absorber in mode-locked fiber lasers: modeling and analysis

Realization of high-performance tri-layer graphene saturable absorber mirror fabricated via a one-step transfer process

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