scholarly journals Q-switched erbium-doped fibre laser based on molybdenum disulfide and tungsten disulfide as saturable absorbers

2017 ◽  
Vol 18 (1) ◽  
pp. 20
Author(s):  
K Mohamed ◽  
B Hamida ◽  
Khan Sheroz ◽  
L Hussein ◽  
M Ahmat ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Tungsten Disulfide ◽  
Fibre Laser ◽  
Saturable Absorbers ◽  
Erbium Doped ◽  
And Tungsten

Tribological Studies of Transmission Oil Dispersed With Molybdenum Disulfide and Tungsten Disulfide Nanoparticles

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
V. Srinivas ◽  
R. N. Thakur ◽  
A. K. Jain ◽  
M. Saratchandra Babu
Keyword(s):  
Molybdenum Disulfide ◽  
Size Variation ◽  
Tungsten Disulfide ◽  
Particle Size Analyzer ◽  
Transmission Oil ◽  
Mos2 Nanoparticles ◽  
The Stability ◽  
Friction And Wear Characteristics ◽  
Load Conditions ◽  
And Tungsten

This paper compares the tribological properties of transmission oil dispersed with molybdenum disulfide (MoS2) and tungsten disulfide (WS2) nanoparticles. Lubricant samples are prepared by dispersing MoS2 and WS2 nanoparticles in 0.5 wt.% in transmission oil. The nanoparticles are stabilized in the lubricant by surface modification with surfactant SPAN 80. The stability of the lubricant in terms of size variation of dispersed nanoparticles is evaluated using particle size analyzer. The antiwear, antifriction, and extreme pressure (EP) properties are tested on a four-ball wear tester and a comparison is made to assess the relative performance of MoS2 and WS2 nanoparticles. The friction and wear characteristics of lubricant dispersed with nanoparticles are strongly dependent upon the load taken into consideration. The lubricant dispersed with WS2 nanoparticles gave higher weld load and load wear index (LWI) than that of lubricant dispersed with MoS2 nanoparticles. The metallographic studies show that under high load conditions, the WS2 nanoparticles deposit more than MoS2 nanoparticles, thereby giving better performance at higher load conditions.

Q-switched erbium-doped fiber laser with molybdenum disulfide (MoS2) nanoparticles on D-shaped fiber as saturable absorber

2019 ◽  
Vol 28 (03) ◽  
pp. 1950026 ◽  
Author(s):  
H. Ahmad ◽  
S. Soltani ◽  
K. Thambiratnam
Keyword(s):  
Molybdenum Disulfide ◽  
Pulse Width ◽  
Signal To Noise Ratio ◽  
Laser Cavity ◽  
Laser Pulses ◽  
High Signal ◽  
Signal To Noise ◽  
Saturable Absorbers ◽  
Erbium Doped ◽  
Compact Design

In this study, short [Formula: see text]-switching laser pulses are generated by drop-casting two-dimensional Molybdenum Disulfide (MoS[Formula: see text] nanoparticles as saturable absorbers (SA) on a side polished optical fiber in a [Formula: see text]-band laser cavity. The proposed laser is capable of generating highly stable [Formula: see text]-switched laser pulses at the wavelength of 1559.42[Formula: see text]nm with a maximum repetition rate of 73.96[Formula: see text]kHz, and a minimum pulse width of 1.93[Formula: see text][Formula: see text]s. The relatively high signal-to-noise ratio of 58.7[Formula: see text]dB indicates a highly stable output. The proposed SA can be applied in a variety of fields due to its ease of manufacturing and cost-effectiveness as well as its robust and compact design.

scholarly journals Q-switched fiber laser with tungsten disulfide saturable absorber prepared by drop casting method

2017 ◽  
Vol 9 (3) ◽  
pp. 103 ◽  
Author(s):  
Nurul Nadia Razak ◽  
Moh Yasin ◽  
Zahriladha Zakaria ◽  
Anas A Latiff ◽  
Sulaiman Wadi Harun
Keyword(s):  
Fiber Laser ◽  
Saturable Absorber ◽  
Tungsten Disulfide ◽  
Fibre Laser ◽  
High Speed Photography ◽  
Applied Physics ◽  
Thin Film Layer ◽  
Erbium Doped ◽  
Q Switching ◽  
Laser Optics

We experimentally demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) operation by using a saturable absorber (SA) based on tungsten disulfide (WS2). By depositing WS2 thin film layer at the end of optical fiber ferrule, we fabricated a SA device. The SA is incorporated into an Erbium-doped fiber laser (EDFL) cavity to generate a Q-switching pulses train operating at 1559.8 nm. As a result, stable passively Q-switched EDFL pulses with maximum output pulse energy of 123.2 nJ, repetition rate of 104.1 kHz, and pulse width of 9.61 us are achieved when the input pump power is 142.1 mW at the wavelength of 980 nm. Full Text: PDF ReferencesC. Gao, W. Zhao, Y. Wang, S. Zhu, G. Chen, and Y. Wang, "Passive Q-switched fiber laser with SESAM in ytterbium-doped double-clad fiber", in 27th International congress on High-Speed Photography and Photonics (International Society for Optics and Photonics, 2007). CrossRef M. Ahmed, N. Ali, Z. Salleh, A. Rahman, S. Harun, M. Manaf, et al., "Q-switched erbium doped fiber laser based on single and multiple walled carbon nanotubes embedded in polyethylene oxide film as saturable absorber", Optics & Laser Technology 65, 25 (2015). CrossRef M. A. Ismail, F. Ahmad, S. W. Harun, H. Arof and H. Ahmad, "A Q-switched erbium-doped fiber laser with a graphene saturable absorber", Laser Phys. Lett. 10, 025102 (2013). CrossRef G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, "Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber", Appl. Phys. Lett. 101, 241106 (2012). CrossRef N. H. M. Apandi, F. Ahmad, S. N. F. Zuikafly, M. H. Ibrahim, S. W. Harun, "Bismuth (III) Telluride (Bi2Te3) topological insulator embed in PVA as passive Q-switcher at 2 micron region", Photon. Lett. of Poland 8, 101 (2016). CrossRef J. Bogusławski, G. Soboń, K. Tarnowski, R. Zybała, K. Mars, A. Mikuła, K. M. Abramski and J. Sotor, "All-polarization-maintaining-fiber laser Q-switched by evanescent field interaction with Sb2Te3 saturable absorber", Optical Engineering 55, 081316 (2016). CrossRef Z. Luo, Y. Huang, M. Zhong, Y. Li, J. Wu, B. Xu, H. Xu, Z. Cai, J. Peng, and J. Weng, "1-, 1.5-, and 2-um fiber lasers Q-switched by a broadband few-layer MoS2 saturable absorber", J. Lightwave Technol. 32, 4679 (2014). CrossRef N. N. Razak, A. A. Latiff, Z. Zakaria and S. W. Harun, "Q-switched Erbium-doped Fiber Laser with a Black Phosphorus Saturable Absorber", Photon. Lett. of Poland 9, 72 (2017). CrossRef D. Mao, Y. Wang, C. Ma, L. Han, B. Jiang, X. Gan, S. Hua, W. Zhang, T. Mei, and J. Zhao, "WS2 mode-locked ultrafast fiber laser", Sci Rep 5, 7965 (2015). CrossRef K. Wu, X. Zhang, J. Wang, X. Li, and J. Chen, "WS2 as a saturable absorber for ultrafast photonic applications of mode-locked and Q-switched lasers", Optics Express 23, 11453 (2015). CrossRef K. Lau, A. Latif, M. A. Bakar, F. Muhammad, M. Omar, and M. Mahdi, "Mechanically deposited tungsten disulfide saturable absorber for low-threshold Q-switched erbium-doped fiber laser", Applied Physics B 123, 221 (2017). CrossRef H. Chen, Y. Chen, J. Yin, X. Zhang, T. Guo, and P. Yan, "High-damage-resistant tungsten disulfide saturable absorber mirror for passively Q-switched fiber laser", Optics Express 24, 16287 (2016). CrossRef J. Lin, K. Yan, Y. Zhou, L. Xu, C. Gu, and Q. Zhan, "Tungsten disulphide based all fiber Q-switching cylindrical-vector beam generation", Applied Physics Letters 107, 191108 (2015). CrossRef H. Chen, Y. Chen, J. Yin, X. Zhang, T. Guo, and P. Yan, "High-damage-resistant tungsten disulfide saturable absorber mirror for passively Q-switched fiber laser", Optics Express 24, 16287 (2016). CrossRef K. Mohamed, B. Hamida, S. Khan, L. Hussein, M. Ahmat, E. Ismail, N. Kadir, A. Latif, S. Harun, "Q-switched erbium-doped fibre laser based on molybdenum disulfide and tungsten disulfide as saturable absorbers," Ukrainian Journal of Physical Optics, 18 (2017). CrossRef

scholarly journals Tungsten disulfide saturable absorbers for 67 fs mode-locked erbium-doped fiber lasers

2017 ◽  
Vol 25 (3) ◽  
pp. 2950 ◽  
Author(s):  
Wenjun Liu ◽  
Lihui Pang ◽  
Hainian Han ◽  
Mengli Liu ◽  
Ming Lei ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
Tungsten Disulfide ◽  
Saturable Absorbers ◽  
Erbium Doped
Sign in / Sign up

Export Citation Format

Share Document