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Chung, Te-Yuan Professor


	+ 886-3-4227151 ext 65296



	+886-3-4252897

	IL-402

	tychung@dop.ncu.edu.tw

Biography

　　Te-yuan Chung received his BS from National Tsing Hua University in 1993 and Ph.D. in Optics from CREOL, University of Central Florida, Orlando, FL, U.S.A. in 2004. After one year postdoc position in CREOL, he joined National Central University (NCU) in Chungli, Taiwan as a professor at Dept. of Optics and Photonics in 2006. He is now the associate chair of Dept. of Optics and Photonics.
He has published 22 journal papers and has 14 patents to his credit. In 2010, he achieved a technology transfer with loyalty of 25 million NTD and won the Outstanding Technology Transfer Prize of National Science Council, Taiwan. He also served as a committee member of several international workshops/conferences held in Taiwan.
His current research interests are in laser using volume Bragg grating as cavity component, laser mode analysis, solar cell and silicon wafer inspection using photoluminescence signal, and LED thermal management and simulation.

Education

Ph.D. Optics, CREOL /CollegeofOpticsand Photonics,University of CentralFlorida,Orlando,FLUSA

Work Experience

2011-present	Associate professor at Department of Optics and Photonics,National Central University,TAIWAN, R.O.C. 1. Volumetric Bragg grating(VBG) feedback laser dynamics 2. Thermal management of high power LED and the measurement of LED package thermal resistance 3. High power LED thermo-electro coupled simulation 4. Develop photoluminescence/electroluminescence methods for solar cell physical properties inspection 5. Solar cell concentrator design 6. Double-ring laser for bio-medical application 7. Lock-in thermography
2006-2011	Assistant professor at Department of Optics and Photonics,National Central University,TAIWAN, R.O.C. 1. Investigate applications of volumetric Bragg grating(VBG) 2. Study of PQ-PMMA photopolymer VBG 3. Develop portable 488/405 nm light source for display, holographic storage and bio-medical applications 4. Develop compact spectrum narrowed laser systems for spectroscopy and gas sensing 5. Thermal management of high power LED and the measurement of LED package thermal resistance 6. High power LED thermo-electro coupled simulation 7. Develop photoluminescence method of solar cell inspection 8. Solar cell concentrator design 9. Construct a theory for temperature independent laser based on variable reflectivity laser mirrors
2004-2005	Research scientist at CREOL /CollegeofOptics,UniversityofCentral Florida FL USA, under the supervision of Prof. Michael, BASS. 1. Investigate the utilization of volumetric Bragg grating as laser mirrors 2. Achieve narrow laser output linewidth using volumetric Bragg gratings 3. Develop light source for Raman spectroscopy
2000 – 2004	Graduate research assistant at CREOL /CollegeofOptics, University of Central Florida,FLUSA, under the supervision of Prof. Michael, BASS. 1. Improve 2D display of up conversion materials excited by diode laser 2. Develop and demonstrate true 3D display by using two-photon excitation 3. Study LCD properties, display design and other applications 4. Invent beam control prism for diode laser to correct fast divergence axis and allow large angular turning of output beam 5. Develop and analyze pump cavity design of diode-pumped solid state laser rod to achieve gain non-uniformity lower than 10%
1999 – 2000	Graduate research assistant at CREOL /CollegeofOptics, University of Central Florida,FL,USA, under the supervision of Prof. Michael, BASS. 1. Investigate optical, and thermal properties of high power diode laser arrays 2. Develop 120W CW 808nm spray cooled high power diode laser arrays with heat flux 200W/cm²
1994 – 1996	Graduate research assistant atNational Tsing Hua University,TAIWAN, R.O.C. under the supervision of Prof. Jow-Tsong Shy 1. Measure absolute Frequencies of the ¹³³Cs₂ Transitions near 1064 nm 2. Achieve diode pumped Nd:YAG laser frequency stabilization
1992 – 1993	Research assistant atNational Tsing Hua University,TAIWAN, R.O.C., under the supervision of Prof. Shiu-Chin Wu, Develop applications of PIXE (Particle induced X-ray emission) by using 3MeV proton beam

Research Interests

High Power Laser, Solid State Laser, Laser System Design, Thermal Management, Laser Physicsm, Optical simulation

Research Groups Biophotonics and Bioimaging ．Lasers ．Solar Cells ．Solid-State Lighting and Human Factors Technology

Current Research Areas

This research group devotes in studying the properties of new laser optical element, volume Bragg grating, and constructing various laser systems based on this element to develop its applications such as laser display, laser spectroscopy, holographic storage light source… etc. On the other hand, we work on developing laser material and laser system configuration. In cooperating with thermal management and optical simulation, we try to enhance various laser output properties such as longitudinal mode, transverse mode, laser wavelength, etc… At the mean time, we also study the thermal properties of high power LED package with simulation and experiment.

Distinctions

2013 Serve as the co-chair of Sub-conference VIII: Solid-State Lighting Technology of OPTIC 2013,Chungli,Taiwan, Dec 2013.

2012 Outstanding Lecturer Award ofNational Central University,Taiwan

2012 As an invited speaker of 2012 Solid-state Lighting Workshop,Chungli,Taiwan, Apr 20, 2012

2011 As an invited speaker of SCOPE Optics Forum,Changzhi,Shanxi,China, Dec 23-25, 2011

2011 Serve as the program committee chair of The forth Asia-Pacific Light Sources Workshop 2011, Apr 13-14, 2011.

2011 As an invited speaker of The forth Asia-Pacific Light Sources Workshop 2011, Apr 13-14, 2011.

2011 Serve as a guest editor of Advances in Optical Technologies

2010 Awarded with Outstanding Contribution of Technology Transfer Award (傑出技術移轉貢獻獎), National Science Council,Taiwan

2009 Outstanding Lecturer Award ofCollegeofScience,National Central University,Taiwan

2008 Serve as section chair of 6th International Conference on Optics-photonics Design & Fabrication “ODF’08,Taipei.

2002 Best Poster Presentation Award, CREOL Industry Affiliates' day,Florida, Apr. 2002,USA

Selected Publications

Journal Papers

No.	Title
1	1. Te-yuan Chung, Chung-Hao Wang, Kai-Jay Chang, Szu-Yu Chen, Hsin-Hsin Hsieh, Chao-Ping Huang, and Ching-Hsiao Arthur Cheng, “Evaluation of the spatial distribution of series and shunt resistance of a solar cell using dark lock-in thermography”, J. of Applied Physics, Vol. 115, Iss. 3, p. 034901, (2014-01). (IF=2.21) 2. Te-Yuan Chung, Yu-Hua Hsieh, Chi-Chun Liao and Ching-Hsiao Arthur Cheng, “Transverse modes of a laser using VBG as the cavity mirror”, Opt. Lett., Vol.38, No. 24, pp.5346-5348 (2013-12) (IF=3.385) 3. M. L. Tsai, J. H. Liao, J. H. Yeh, T. C. Hsu, S. J. Hon, Te-Yuan Chung, and , Kun-Yu Lai* “High-voltage thin-film GaN LEDs fabricated on ceramic substrates: the alleviated droop effect at 670 W/cm²”, Opt. Express., Vol. 21, Iss. 22, pp. 27102-27110 (2013-11). (IF=3.735) 4. Liu Cheng-Yi, C.C. Lai, J.H. Liao, L.C. Cheng, H.H. Liu, C.C. Chang, G.Y. Lee, Jen-Inn Chyi, Li-Ko Yeh, J.H. He, Te-Yuan Chung, L.C. Huang, and Kun-Yu Lai, “Nitride-based concentrator solar cells grown on Si substrate”, Solar Energy Materials and Solar Cells, Vol. 117, p. 54-58. (2013). (IF=4.542) 5. Tanant Waritanant, Sakoolkan Boonruang, and Te-Yuan Chung, “High Angular Tolerance Thin Profile Solar Concentrators Designed Using a Wedge Prism and Diffraction Grating”, Solar Energy, Vol. 87, p. 35-41. (2013). (IF=2.475) 6. Te-yuan Chung, Ying-Chang Chung, and Sheng-Hui Chen, “Specific series resistance evaluation using photoluminescence signal of Si solar cells”, Opt. Express., Vol. 20, No. S6, p. A822 (2012-09). (IF=3.735) 7. Ching-Cherng Sun, Ching-Yi Chen, Cheng-Chien Chen, Chih-Yu Chiu, Yi-Ning Peng, Yu-Huan Wang, Tsung-Hsun Yang, Te-Yuan Chung, and Cheng-Yang Chung, “High uniformity in angular correlated-color-temperature distribution of white LEDs from 2800K to 6500K”, Opt. Express.,Vol. 20, No. 6, p. 6622 (2012). (IF=3.735) 8. Te-yuan Chung, Jian-Hong Jhang, Jing-Sian Chen, Yi-Chien Lo, Gwo-Herng Ho, Mount-Learn Wu, and Ching-Cherng Sun, “A study of large area die bonding materials and their corresponding mechanical and thermal properties”, Microelectronics Reliability, Vol.52, Iss.5, p.872-877 (2012). (IF=1.167) 9. K. Y. Lai, T. Paskova, V. D. Wheeler, T. Y. Chung, J. A. Grenko, M. A. L. Johnson, K. Udwary, E. A. Preble, and K. R. Evans, “Indium incorporation in InGaN/GaN quantum wells grown on m-plane GaN substrate and c-plane sapphire”, Phys. Status Solidi A, Vol. 209, Iss. 3, p. 559–564, (2011) (IF=1.472) 10. Te-Yuan Chung, Cheng-Yeh Chiang and Chao-Wen Liang, “Volume Bragg Grating-based 70 nm tunable and narrow output spectra from a Ti:sapphire laser”, J. J. App. Phys., Vol. 50, No. 9, p. 092701 (2011). (IF=1.058) 11. Wen-Shing Sun, Chuen-Lin Tien, Te-Yuan Chung, Ju-Yi Lee, Yan-Nan Lin, Dung-Yi Hsieh, Chia-Feng Yang and Tsai-Wei Lin, “Design and evaluation of a Blu-ray pickup head system for determining the tilt angle and displacement of the test plane”, Optics and Lasers in Engineering, Vol. 49, Iss. 8, p. 1076-1088 (2011) (IF=1.838) 12. Tanant Waritanant, and Te-Yuan Chung, “Influence of minute self-absorption of a volume Bragg grating used as a laser mirror”, IEEE J. of Quantum Elec. Vol. 47, Iss. 3, p. 390-397 (2011) (IF=1.879) 13. H. W. Tseng, C. T. Lu, Y. H. Hsiao, P. L. Liao, Y. C. Chuang, T. Y. Chung, C. Y. Liu, “Electromigration-induced failures at Cu/Sn/Cu flip-chip joint interfaces”, Microelectronics Reliability, Vol.50, Iss.8, p.1159-1162 (2010) (IF=1.167) 14. Te-Yuan Chung, Chien-Jung Liao, Yu-Hung Lien, Sideny S. Yang and Jow-Tsong Shy, “Special laser wavelength generation using a volume Bragg grating as Nd:GdVO4 laser mirror,” J. J. App. Phys, 49, p. 062503 (2010) (IF=1.058) 15. Y. L. Chen, W. W. Chen, C. E. Du, W. K. Chang, J. L. Wang, T. Y. Chung, and Y. H. Chen, “Narrow-line, cw orange light generation in a diode-pumped Nd:YVO4 laser using volume Bragg gratings,” Opt. Exp., Vol. 17, Issue 25, pp.22578-22585 (2009) (IF=3.753) 16. P. H. Chen, C. L. Lin, Y. K. Liu, T. Y. Chung, and C.-Y. Liu, “Diamond Heat Spreader Layer for High-Power Thin-GaN Light-Emitting Diodes”, IEEE Photonics Tech. Lett., 20(10), pp. 845-847 (2008) (IF=1.989) 17. Y. H. Chen, Y. C. Chang, C. H. Lin, and T. Y. Chung, “Diode-pumped, actively internal-Q-switched Nd:MgO:PPLN laser”, Opt. Exp., Vol. 16, Issue. 3, pp. 2048-2055 (2008) (IF=3.753) 18. T. Y. Chung and M. Bass, “General analysis of slab lasers using geometric optics”, Appl. Opt., Vol. 46, Issue 4, pp. 581-590 (2007) (IF=1.707) 19. T. Y. Chung and M. Bass, “Temperature independent lasers using output couplers with temperature dependent reflectivity”, Appl Opt., Vol. 45, Issue 36, pp. 9198-9202 (2006) (IF=1.707) 20. B. Chen, Y. Chen, J. Simmons, T. Y. Chung and M. Bass, “Thermal Lensing of Edge-pumped Slab Lasers-I”, Appl. Phys. B Vol. 82, 413–418 (2006) 21. T. Y. Chung, A. Rapaport, V. Smirnov, L. B. Glebov, M. C. Richardson, and M. Bass, “Solid-state laser spectral narrowing using a volumetric photothermal refractive Bragg grating cavity mirror”, Opt. Lett, Vol. 32, No. 2, 229-231, (2006) (IF=3.318) 22. C. Ying, A. Rapaport, T. Y. Chung, B. Chen and M. Bass, “Distribution of fluorescence exiting the surfaces of a Yb:YAG slab laser”, Applied Optics, Vol. 42, Issue 36, 7157-7162, (2003) (IF=1.707) 23. S. C. Jeng, D. Y. Chung, C. C. Liaw, F. H. Yang, J. T. Shy*, T. Lin, and S. Y. Shaw, "Absolute Frequencies of the 133Cs2 Transitions near 1064 nm", Opt. Commun. Vol. 155, 263-269 (1998).

Laboratory

Opto-electro-thermo Integration Laboratory

Laser Application Laboratory