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Analysis of Quantum Dot Vertical Cavity Semiconductor Optical Amplifier with Saturable Absorber Omar Qasaimeh Electrical Engineering Department, Jordan University of Science and Technology Irbid 22110 Jordan qasaimeh@just.edu.jo Keywords: Quantum dot, vertical cavity, optical amplifier, saturable absorber Abstract.
The inhomogeneous line broadening is 30meV, the linewidth enhancement factor is =1.5 and the material loss for the VCSOA is equal to 10cm-1.
Bowers, MEMS-Tunable Vertical-Cavity SOAs, IEEE Journal of Quantum Electronics, 41, 390 (2005) [3] O.
Martin-Pereda, Modeling Reflective Bistability in Vertical-Cavity Semiconductor Optical Amplifiers, IEEE Journal of Quantum Electronics, 41, 376 (2005) [8] E.S.
Coldren, Vertical Cavity Semiconductor Optical Amplifiers: Comparison of Fabry–Pérot and Rate Equation Approaches, IEEE Journal of Quantum Electronics, 38, 279 (2002)

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Introduction Because hydrogen is viewed as the economical, nonpolluting, and renewable source of energy, the new materials for hydrogen storage are concerned by many researchers.
Since carbon nanotube was discovered[1], it has been viewed as the novel material for hydrogen storage owing to its outstanding characteristics.
Srinivasa: International Journal of Hydrogen Energy, 33 (2008), p393-403
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C.Wang: International Journal of Hydrogen Energy, 32(2007),1939-1942

As a result, the rate of materials’ utilization is not proper.
Acknowledgements This research is supported by the National Natural Science Foundation of China (NO.50139030).
Journal of Guizhou University (Natural Sciences) Vol. 26, No. 3, Jun. 2009 [8].
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Annealing this sample at various temperatures, the relationship between yield stress and grain sizes was obtained on materials with equal chemical composition.
Introduction Aluminum alloy has been used in the various fields as structural materials or functional materials because it has good specific strength, workability and corrosion resistance.
That is to say, materials refined grains have such positive deviation without differences of purity on materials.
Janghorban, Journal of Alloys and Compounds. 474 (2009) 406–415 [10] S.
Chen, Materials Transactions 50, No. 8 (2009) 1941-1948 [11] N.

Experimental The materials were HDH TC4 (H:0.01 wt%) titanium alloy powder and hydrogenated TC4 powders (H:0.09 wt%, H:0.18 wt%, H:0.32 wt% , H:0.42 wt%, H:0.46 wt%) which were prepared by turning and mechanical grinding process.
Duan and et al: Rare Materials and Engineering Vol. 34 (2005), p. 1123 [2] H.L.
Beneduce: Journal of Alloys and Compounds Vol. 353 (2003), p. 217 [9] L.
Deng and et al: Rare Metal Materials and Engineering Vol. 34 (2005), p. 1622, In Chinese [10] Y.Q.
Ren: Journal of University of Science and Technology Beijing Vol. 30 (2008), p. 893, In Chinese [11] S.J.

Ultrasound is a mechanical wave of elastic material, a frequency of 2×105 ~ 2×109 Hz.
High-frequency ultrasound is a mechanical oscillation, the local community in the materials field rapidly alternating compression and expansion of the material and the crushing effect of applied tension lead to “cavitation”; study showed that the mechanical effect has more significant effect on the polymer material and increase with molecular weight.
Materials and methods Materials and equipments WPIs (the United States, Columbia company); water bath machines (Japan, Yamato BM200); pH meter (Swiss, Mettler Toledo Delta 320); homogenizer (Japan, Yamato MT-51); ultrasonic oscillator (China, Kudos SK8200HP); centrifuge (American, Kubota 5200).
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Journal of South China University of Technology (Natural Science Edition), 2003,31(11):30-33

During the choice of building materials, it is necessary to choose some greater rigidity material, such as while selecting the materials of the ground, the hard materials can be chosen, such as cement floor and terrazzo floor, which have good vibration reduction effect.
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Journal of Sound and Vibration，Vol. 284 (2005), p. 103- 132
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These factors influence the dielectric properties of a material.
The main heating using electromagnetic field is based on its direct impacts on polar materials, and the extraction mechanism involves three steps.
Omar, Techniques for extraction of bioactive compounds from plant materials: A review, Journal of Food Engineering 117 (2013) 426–436
Science Bulletin, Series B 74(2) (2012) 129-142
Innovative Food Science and Emerging Technologies, 9 (2008b) 477–482.

Materials and methods Materials: A solution of polyethylene oxide (PEO), MW=2000,000 g·mol-1, was made 3-6 wt% in distilled water and under stirring for 4h at room temperature, 20℃.
Progress in Polymer Science, 39(2014), 862-890
Electrospinning: materials, processing, and applications. (2012)
Journal of Applied Physics, 87(2000), 4531-4547
Journal of Applied Physics, 108(2010), 081101