7 high power semiconductor lasers

Báo cáo hóa học: " Narrow ridge waveguide high power single mode 1.3-lm InAs/InGaAs ten-layer quantum dot lasers" pptx

Ngày tải lên : 22/06/2014, 18:20

... lasing at high total output power of 272 .6 mW at ~1.3 lm under CW operation Extremely high single lateral mode output power of 610 mW/facet was achieved in pulsed operation with minimal power saturation ... QD lasers Compared with CW operation, power saturation and kinks in the output power characteristics are greatly reduced in pulsed mode, which is attributed to reduction in device heating High ... output power P and external differential quantum efﬁciency gd of our ten-layer InAs narrow RWG QD lasers are among the highest values in the 1.29–1.30 lm wavelength range ever reported The high...

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HIGH-POWER CONVERTERS AND AC DRIVES ppt

Ngày tải lên : 16/03/2014, 05:20

... Cataloging-in-Publication is available ISBN-13 978 -0- 471 -73 171 -9 ISBN-10 0- 471 -73 171 -4 Printed in the United States of America 10 ftoc.qxd 1/3/20 07 2:16 PM Page v Contents Preface xiii Part One ... Carrier-Based PWM 170 Summary 173 References 175 Appendix 176 Other Multilevel Voltage Source Inverters 9.1 9.2 9.3 9.4 179 179 Introduction NPC/H-Bridge Inverter 179 9.2.1 Inverter Topology 179 9.2.2 ... press pack) IGBT 1 .7 kV/3.6 kA (Eupec) 0 Figure 2.1-1 2.2 2.2.1 I (kA) Voltage and current ratings of high- power semiconductor devices HIGH- POWER SWITCHING DEVICES Diodes High- power diodes can...

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Báo cáo " Research, design and fabrication of a high-power combiner using Wilkinson bridge of L-band " pptx

Ngày tải lên : 22/03/2014, 11:20

... ports, and the resistive power divider is lossy The Wilkinson power divider has all ports matched and has isolation between output ports, but is lossy [1] The Wilkinson power divider is a 3-port ... Subst="MSub1" W=1.53303 mm {t} L=40.32 07 mm {t} MLIN TL13 Subst="MSub1" W=1.53303 mm {t} L=41.52 07 mm {t} MLIN TL10 Subst="MSub1" W=2.963230 mm L=10 mm {-t} 1 87 Term Term2 Num=2 Z=50 Ohm R R1 R=100 ... brigde methods, we propose a combination methods from the medium power modul and the small power modul (Figure 3) 0o 0o 200W 200W Fig The power combining use Wilkinson brigde Experiments result We...

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Scientific Assessment of High-Power Free-Electron Laser Technology doc

Ngày tải lên : 28/03/2014, 11:20

... 30 78 50 220 30 70 × 32 17 67 × 10 256 2×9 × 42 × 19 × 33 600 984 2.5 7. 1 12 2.5 1.6 2 3.3 10 3.2 3.4 3.3 2 .73 3.2 6.5 3.5 3.8 4.8 1.8 5.5 0.88 12 25 13 3.9 11 7. 2 10 10 1.5 2 .73 0 .75 0 .7 0 .71 ... DESY (FLASH) 76 0 340 120-230 97- 1,200 70 -220 65 -75 60 47 32-150 22 20 18-230 18-40 15.5 11-14 6-8 5.5 5.3 5-20 4-22 4-16 3-250 3-53 3-20 1.88 0.9-6.5 0.8 0 .7- 10 0.6 0.45 0.42 0.3-0 .7 0.3-0.6 0.2-1.0 ... 0 .75 0 .7 0 .71 1.0-1.6 1.5 0.5 0.1 0.5 1.5 0 .7 0.8 2.8 1.3-1 .7 0.9 0.99 1 1.44 0.3-0 .7 0 .7- 1.8 1.8 1.4 0.5-0.8 0 .7- 1.4 1.2 0.4 0-4 .75 1.4 4.5 0.8 2 4.2 0-4 .75 0.3-1.5 0.81 RF,O EA,O ERL,O MA,O RF,S...

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phase change phenomena during high power laser materials

Ngày tải lên : 06/05/2014, 09:01

... Particle Beams 14 (2) (1996) 171 – 179 [2] C.J Knight, AIAA J 17 (1 979 ) 519 – 523 [3] H.W Liepmann, Roshko, A., Wiley, New York, 1 973 [4] M.M Martynyuk, Russian J Phys Chem 57 (1983) 494–501 [5] V.P ... (1983) 494–501 [5] V.P Skripov, Wiley, New York, 1 974 [6] K.H Song, X Xu, Appl Phys A 65 (19 97) 477 – 485 [7] K.H Song, X Xu, Appl Surface Sci 1 27 – 129 (1998a) 111–116 [8] K.H Song, X Xu, Proc ... Engineering A292 (2000) 162–168 Fig p-T diagram during high power, pulsed excimer laser interaction with metal Evaporation mechanisms Under high power pulsed laser irradiation, the surface of the...

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MATERIALS FOR HIGH TEMPERATURE SEMICONDUCTOR DEVICES ppt

Ngày tải lên : 29/06/2014, 09:21

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Improving the performance of a high power, lead–acid battery with paste additives docx

Ngày tải lên : 05/07/2014, 20:21

... weight Total weight Values 0. 071 in Ž0.18 cm 3.2 cm3 35 g 0. 076 in Ž0.19 cm 69 g 60% 14 0.060 in Ž0.15 cm 2 .7 cm3 30 g 0.0 67 in Ž0. 17 cm 57. 3 g 65% 15 0.0 572 in Ž0.145 cm 76 5 cm3 1.3 grcm3 5.1 molsrl ... 171 .5 195.0 184.0 206.0 196.0 216.5 2 07. 0 – – 2.6 2.1 20.9 20.8 29.1 29.6 36.4 38.0 43.4 45.8 35.5 33.5 47. 0 44.0 50.0 47. 0 56.0 53.0 63.0 60.0 68.5 65.5 – – 32.4 31.3 40.8 40.3 57. 8 58.2 77 .5 ... milesrh Ž31.3 mrs., the battery power required is 19 kW and the specific power is 31 .7 Wrkg With these power requirements, the effectiveness of a battery design powering an electric vehicle can...

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High-power lead–acid batteries for different applications pps

Ngày tải lên : 05/07/2014, 20:21

... Trinidad, J Power Sources 78 (1999) 220 [33] T Juergens, R.F Nelson, J Power Sources 53 (1995) 201 [34] J.R Pierson, J Zagrodnik, R.J Johnson, J Power Sources 67 (19 97) [35] R.C Bhardwaj, J Power Sources ... Wollersheim, J Power Sources 67 (19 97) 33 [24] M Saakes, E Kluiters, D Schmal, S Mourad, P ten Have, J Power Sources 78 (1999) 199 [25] M Saakes, C Kleijnen, D Schmal, P ten Have, J Power Sources ... Steinmetz, J.P Hilger, J Power Sources 53 (1995) 53 [30] N Bui, P Mattesco, P Simon, J Steinmetz, E Rocca, J Power Sources 67 (19 97) 61 [31] R.D Prengaman, J Power Sources 78 (1999) 123 [32] M.L...

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Cải thiện tình trạng của pin trong Windows 7 với Power Troubleshooter doc

Ngày tải lên : 11/07/2014, 21:20

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genetic algorithm based optimal pwm in high power synchronous machines and regulation of observed modulation error

Ngày tải lên : 27/07/2014, 23:28

... 263– 271 Holtz J On the spatial propagation of transient magnetic fields in AC machines IEEE Transactions on Industry Applications 1996; 32: 9 27 9 37 Holtz J Pulse width modulation for electronic power ... distortion and torque pulsation reduction in high- power induction motors using genetic algorithms Journal of Zhejiang University SCIENCE A, 2008, 9(12), pp 174 1- 175 2 Sayyah A, Aflaki M, Rezazade AR Optimization ... Munich, Germany, 2006, pp. 874 – 879 www.intechopen.com 44 Mechatronic Systems, Simulation, Modelling and Control Sun J Optimal pulsewidth modulation techniques for high power voltage-source inverters...

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Báo cáo y học: "Threshold-free high-power methods for the ontological analysis of genome-wide gene-expression studies." pptx

Ngày tải lên : 14/08/2014, 07:21

... Issue 5, Article R74 comment http://genomebiology.com/20 07/ 8/5/R74 R74.12 Genome Biology 20 07, 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Volume 8, Issue 5, Article R74 Nilsson et al ... Genome Biology 20 07, 8:R74 http://genomebiology.com/20 07/ 8/5/R74 (a) Genome Biology 20 07, Method relationships (Spearman metric) (b) Volume 8, Issue 5, Article R74 Nilsson et al R74.5 Method relationships ... R74.2 Genome Biology 20 07, Volume 8, Issue 5, Article R74 Nilsson et al http://genomebiology.com/20 07/ 8/5/R74 sion data for all genes are considered simultaneously,...

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Nghiên cứu, phát triển phương pháp đo quang thông HPCOBLED (high power chip on board light emitting diode) và ứng dụng trong điều kiện thực

Ngày tải lên : 03/12/2014, 15:26

... 75 3.6 Quy trình hiệu chuẩn quang thông HPCOBLED 76 3.6.1 Xác định hệ số hiệu kabs 76 3.6.2 Quy trình đo quang thông 76 3 .7 Kết hiệu chuẩn quang thông HPCOBLED 77 ... chuẩn quang thông HPCOBLED 77 3 .7. 1 Kết xác định hệ số kabs 77 3 .7. 2 Xác định quang thông HPCOBED 78 3 .7. 3 Ước lượng độ không đảm bảo đo 79 3.8 Nghiên cứu tính chất quang ... phân 73 Hình 3.18 Kết hiệu chuẩn phổ công suất 74 Hình 3.19 Kết đánh giá độ ổn định hệ thống đo 75 Hình 3.20 Ảnh HPCOBLED gắn đế tản nhiệt TECMount 284 77 Hình 3.21...

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nghiên cứu, phát triển phương pháp đo quang thông hpcobled (high power chip on board light emitting diode) và ứng dụng trong điều kiện thực

Ngày tải lên : 03/12/2014, 17:03

... 75 3.6 Quy trình hiệu chuẩn quang thông HPCOBLED 76 3.6.1 Xác định hệ số hiệu kabs 76 3.6.2 Quy trình đo quang thông 76 3 .7 Kết hiệu chuẩn quang thông HPCOBLED 77 ... chuẩn quang thông HPCOBLED 77 3 .7. 1 Kết xác định hệ số kabs 77 3 .7. 2 Xác định quang thông HPCOBED 78 3 .7. 3 Ước lượng độ không đảm bảo đo 79 3.8 Nghiên cứu tính chất quang ... phân 73 Hình 3.18 Kết hiệu chuẩn phổ công suất 74 Hình 3.19 Kết đánh giá độ ổn định hệ thống đo 75 Hình 3.20 Ảnh HPCOBLED gắn đế tản nhiệt TECMount 284 77 Hình 3.21...

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LI4TI5O12 based anode materials for high power lithium ion batteries

Ngày tải lên : 09/09/2015, 11:18

... such as carbon [ 57 65], Zn [66], carbon nanoparticles [ 67 73 ], carbon nanofibers [74 ,75 ], carbon nanotubes [76 –80], carbon mesoporous framework [81], graphene [28,82–86], Cu [ 87 89], CuxO [90], ... 71 5.3.1 Li+ ion diffusion coefficient 72 5.3.2 Electronic conductivity 77 5.3.3 Charge/discharge performance at 0.5 C 79 5.3.4 Redox reaction analysis 79 5.3.5 ... 116 7. 3.1 Material characteristics 116 7. 3.2 Electrochemical performances 1 27 7.4 Chapter Conclusions 135 Conclusions and Recommendations 1 37 References...

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Towards high energy and high power density lithium rich cathode materials for future lithium ion batteries exploring and understanding mechanisms and role of transformation

Ngày tải lên : 10/09/2015, 09:28

... LAYERED CATHODES 1 57 7.1 Motivation of the Modification Strategy 1 57 7.2 Material Preparation 1 57 7.3 Crystallographic Characterizations 158 7. 4 Electrochemical ... Discharge Curves and dQ/dV 173 7. 6 Summary 176 CHAPTER CONCLUSIONS AND RECOMMENDATIONS 177 8.1 Conclusions 177 8.2 Limitations and Recommendations ... chemical vapor deposition [71 ], by chemical solution [72 ] and by slurry spray drying method [73 ], AlF3 coating by chemical solution [74 ], ZrO2 coating by chemical solution [75 , 76 ], Al(OH)3 coating...

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4d transition metal doped lini0 5mn1 5o4 cathodes for high power lithium batteries

Ngày tải lên : 10/09/2015, 15:52

... of high power and energy applications: a) Stable crystal structure during electrochemical cycling, especially at high current density; b) High safety and good cyclic performance; c) High power ... LixC6/LiCoO2 generally cannot meet the requirements of these high power applications due to low power density and safety problems To achieve higher power density of single lithium battery, either current ... such as in EVs and HEVs, which require high power density since under the same discharge current density, the higher the operation voltage, the higher the power density can be provided [24, 43]...

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Semiconductor lasers

Ngày tải lên : 08/04/2016, 21:34

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A low power high dynamic range broadband variable gain amplifier for an ultra wideband receiver

Ngày tải lên : 06/11/2012, 10:26

... 60 60 63 63 67 68 73 75 77 77 79 86 88 92 CONCLUSION 95 REFERENCES 97 APPENDIX A 99 APPENDIX B 102 VITA 1 07 ix LIST OF FIGURES ... different gain levels 76 Fig 5.11 Power consumption 77 Fig 5.12 VGA testing pins arrangement 77 Fig 5.13 VGA inputs/outputs testing setup 78 Fig 5.14 Frequency response ... to 16dB 71 Fig 5 .7 Gain steps from -12dB to 0dB 72 Fig 5.8 Gain steps from -26dB to -14dB 72 Fig 5.9 Noise Figure for different gain levels 74 Fig 5.10 IIP3...

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Power Point Tin 8 Bai 7

Ngày tải lên : 18/09/2013, 22:10

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