Ultrafast Pulsed All-Fiber Laser Based on Tapered Fiber Enclosed by Few-Layer WS2 Nanosheets

Reza Khazaeinezhad, Sahar Hosseinzadeh Kassani, Hwanseong Jeong, Kyung Jun Park, Byoung Yoon Kim, Dong Il Yeom, Kyunghwan Oh

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

We demonstrate all-fiber mode-locked laser based on a tapered optical fiber saturable absorber (SA) enclosed in tungsten disulfide (WS2) nanosheets. Tapered fibers were fabricated using the standard flame brushing method to an interaction length of 3 mm with waist diameters of 10 and 15 μ {m}. WS2 nanosheets were prepared via a liquid phase exfoliation method to form a uniform dispersion. Subsequently, the WS2 nanosheets were optically deposited along the interaction length of the tapered fibers by evanescent field interactions. We built a ring laser including the fabricated mode-lockers. The SA with a 10-μ {m} taper diameter delivers the pulses with a pulse duration of 369 fs and 3-dB spectral bandwidth of 7.5 nm; on the other hand, the output pulses using the mode-locker with 15-μ{m} waist diameter were found to have 563-fs pulse duration and 5.2 nm of 3-dB bandwidth. It is shown that the smaller waist diameter of tapered fiber causes wider spectral bandwidth of the ultrafast pulses and narrower 3-dB bandwidth.

Original languageEnglish
Article number7094233
Pages (from-to)1581-1584
Number of pages4
JournalIEEE Photonics Technology Letters
Volume27
Issue number15
DOIs
Publication statusPublished - 2015 Aug 1

Fingerprint

Nanosheets
Fiber lasers
fiber lasers
bandwidth
Bandwidth
Saturable absorbers
fibers
Fibers
absorbers
pulse duration
pulses
Mode-locked fiber lasers
Evanescent fields
Tungsten
Ring lasers
interactions
disulfides
ring lasers
tapering
Laser modes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Khazaeinezhad, R., Kassani, S. H., Jeong, H., Park, K. J., Kim, B. Y., Yeom, D. I., & Oh, K. (2015). Ultrafast Pulsed All-Fiber Laser Based on Tapered Fiber Enclosed by Few-Layer WS2 Nanosheets. IEEE Photonics Technology Letters, 27(15), 1581-1584. [7094233]. https://doi.org/10.1109/LPT.2015.2426178
Khazaeinezhad, Reza ; Kassani, Sahar Hosseinzadeh ; Jeong, Hwanseong ; Park, Kyung Jun ; Kim, Byoung Yoon ; Yeom, Dong Il ; Oh, Kyunghwan. / Ultrafast Pulsed All-Fiber Laser Based on Tapered Fiber Enclosed by Few-Layer WS2 Nanosheets. In: IEEE Photonics Technology Letters. 2015 ; Vol. 27, No. 15. pp. 1581-1584.
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Khazaeinezhad, R, Kassani, SH, Jeong, H, Park, KJ, Kim, BY, Yeom, DI & Oh, K 2015, 'Ultrafast Pulsed All-Fiber Laser Based on Tapered Fiber Enclosed by Few-Layer WS2 Nanosheets', IEEE Photonics Technology Letters, vol. 27, no. 15, 7094233, pp. 1581-1584. https://doi.org/10.1109/LPT.2015.2426178

Ultrafast Pulsed All-Fiber Laser Based on Tapered Fiber Enclosed by Few-Layer WS2 Nanosheets. / Khazaeinezhad, Reza; Kassani, Sahar Hosseinzadeh; Jeong, Hwanseong; Park, Kyung Jun; Kim, Byoung Yoon; Yeom, Dong Il; Oh, Kyunghwan.

In: IEEE Photonics Technology Letters, Vol. 27, No. 15, 7094233, 01.08.2015, p. 1581-1584.

Research output: Contribution to journalArticle

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AU - Park, Kyung Jun

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Khazaeinezhad R, Kassani SH, Jeong H, Park KJ, Kim BY, Yeom DI et al. Ultrafast Pulsed All-Fiber Laser Based on Tapered Fiber Enclosed by Few-Layer WS2 Nanosheets. IEEE Photonics Technology Letters. 2015 Aug 1;27(15):1581-1584. 7094233. https://doi.org/10.1109/LPT.2015.2426178