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- [21] Frontiers in passively mode-locked high-power thin disk laser oscillatorsOPTICS EXPRESS, 2012, 20 (07): : 7054 - 7065Baer, Cyrill R. E.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandHeckl, Oliver H.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland Univ Neuchatel, Dept Phys, CH-2000 Neuchatel, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandSaraceno, Clara J.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandSchriber, Cinia论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandKraenkel, Christian论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland Univ Hamburg, Inst Laser Phys, D-22761 Hamburg, Germany ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandSuedmeyer, Thomas论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland Univ Neuchatel, Dept Phys, CH-2000 Neuchatel, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandKeller, Ursula论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland
- [22] 227-fs pulses from a mode-locked Yb:LuScO3 thin disk laserOPTICS EXPRESS, 2009, 17 (13): : 10725 - 10730Baer, Cyrill R. E.论文数: 0 引用数: 0 h-index: 0机构: ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandKraenkel, Christian论文数: 0 引用数: 0 h-index: 0机构: ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandHeckl, Oliver H.论文数: 0 引用数: 0 h-index: 0机构: ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandGolling, Matthias论文数: 0 引用数: 0 h-index: 0机构: ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandSuedmeyer, Thomas论文数: 0 引用数: 0 h-index: 0机构: ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandPeters, Rigo论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, D-22761 Hamburg, Germany ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandPetermann, Klaus论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, D-22761 Hamburg, Germany ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandHuber, Guenter论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, D-22761 Hamburg, Germany ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, SwitzerlandKeller, Ursula论文数: 0 引用数: 0 h-index: 0机构: ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland ETH, Dept Phys, Inst Quantum Elect, CH-8093 Zurich, Switzerland
- [23] A ps level actively mode-locked Ho:Sc2SiO5 laser at 2112.1 nm resonantly-pumped by Tm fiber laserLASER PHYSICS, 2018, 28 (01)Xiao, You-hong论文数: 0 引用数: 0 h-index: 0机构: Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R ChinaMu, Yan-long论文数: 0 引用数: 0 h-index: 0机构: Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R ChinaYang, Le-le论文数: 0 引用数: 0 h-index: 0机构: Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R ChinaJiang, Zi-yin论文数: 0 引用数: 0 h-index: 0机构: Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R ChinaYang, Xiao-tao论文数: 0 引用数: 0 h-index: 0机构: Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China
- [24] Anisotropy of the thermal and laser output properties in Yb,Nd:Sc2SiO5 crystalCHINESE OPTICS LETTERS, 2021, 19 (04)Zhao, Yuqing论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaWang, Qiangguo论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaMeng, Lihua论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaYao, Yongping论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaLiu, Shande论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaCui, Na论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaSu, Liangbi论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Artificial Crystal Res Ctr, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 200050, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaZheng, Lihe论文数: 0 引用数: 0 h-index: 0机构: Yunnan Univ, Sch Phys & Astron, Kunming 650091, Yunnan, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaZhang, Huiyun论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R ChinaZhang, Yuping论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Peoples R China
- [25] Diode-pumped femtosecond passively mode-locked Yb:LPS laserLASER PHYSICS LETTERS, 2012, 9 (10) : 726 - 729Xu, C. W.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeTang, D. Y.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeXu, X. D.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeZheng, L. H.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeZhang, J.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeTan, W. W.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeLi, D. Z.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeSu, B. L.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeXu, J.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
- [26] CW and Modelocked Operation of an Yb:(Sc,Y,Lu)2O3 Thin-disk Laser2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2011,Saraceno, C. J.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandHeckl, O. H.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandBaer, C. R. E.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandGolling, M.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandSuedmeyer, T.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandBeil, K.论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, Hamburg, Germany ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandKraenkel, C.论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, Hamburg, Germany ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandPetermann, K.论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, Hamburg, Germany ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandHuber, G.论文数: 0 引用数: 0 h-index: 0机构: Univ Hamburg, Inst Laser Phys, Hamburg, Germany ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, SwitzerlandKeller, U.论文数: 0 引用数: 0 h-index: 0机构: ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland
- [27] 575-fs passively mode-locked Yb:CaF2ceramic laser*CHINESE PHYSICS B, 2020, 29 (07)Wang, Cong论文数: 0 引用数: 0 h-index: 0机构: Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R China Shandong Normal Univ, Shandong Prov Key Lab Opt & Photon Device, Sch Phys & Elect, Jinan 250358, Peoples R China Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaHao, Qian-Qian论文数: 0 引用数: 0 h-index: 0机构: Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R China Shandong Normal Univ, Shandong Prov Key Lab Opt & Photon Device, Sch Phys & Elect, Jinan 250358, Peoples R China Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaLi, Wei-Wei论文数: 0 引用数: 0 h-index: 0机构: Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaHuang, Hai-Jun论文数: 0 引用数: 0 h-index: 0机构: Wuhan Univ Technol, Sch Sci, Wuhan 430070, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaWang, Shao-Zhao论文数: 0 引用数: 0 h-index: 0机构: Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaJiang, Peng论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Synthet Single Crystal Res Ctr, Shanghai Inst Ceram, Shanghai 201800, Peoples R China Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201800, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaLiu, Jie论文数: 0 引用数: 0 h-index: 0机构: Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R China Shandong Normal Univ, Shandong Prov Key Lab Opt & Photon Device, Sch Phys & Elect, Jinan 250358, Peoples R China Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaMei, Bing-Chu论文数: 0 引用数: 0 h-index: 0机构: Wuhan Univ Technol, Sch Sci, Wuhan 430070, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R ChinaSu, Liang-Bi论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Synthet Single Crystal Res Ctr, Shanghai Inst Ceram, Shanghai 201800, Peoples R China Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201800, Peoples R China Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R China
- [28] A 12.1-W SESAM mode-locked Yb:YAG thin disk laserCHINESE PHYSICS B, 2016, 25 (05)Peng, Yingnan论文数: 0 引用数: 0 h-index: 0机构: Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R ChinaWang, Zhaohua论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R ChinaLi, Dehua论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R ChinaZhu, Jiangfeng论文数: 0 引用数: 0 h-index: 0机构: Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R ChinaWei, Zhiyi论文数: 0 引用数: 0 h-index: 0机构: Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China
- [29] Kerr-Lens Mode-Locked 2-μm Thin-Disk LasersIEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2018, 24 (05) : 1 - 11Zhang, Jinwei论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Quantum Opt, D-85748 Garching, Germany Max Planck Inst Quantum Opt, D-85748 Garching, GermanyMak, Ka Fai论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Quantum Opt, D-85748 Garching, Germany Max Planck Inst Quantum Opt, D-85748 Garching, GermanyPronin, Oleg论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Quantum Opt, D-85748 Garching, Germany Max Planck Inst Quantum Opt, D-85748 Garching, Germany
- [30] LD pumped Nd:Lu2SiO5 passively mode-locked laser with a SESAMLASER PHYSICS LETTERS, 2011, 8 (02) : 107 - 110Cong, Z. H.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeZhang, X. Y.论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeWang, Q. P.论文数: 0 引用数: 0 h-index: 0机构: Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeTang, D. Y.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeTan, W. D.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeZhang, J.论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeXu, X. D.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeLi, D. Z.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, SingaporeXu, J.论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201800, Peoples R China Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore