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Professor Pan,Ci-Ling
Personal Website
Office:+886-3-5742275 (PHYS R231)
Student Office:+886-3-5162576 (PHYS R218)
Laboratory:+886-3-5742552 (PHYS R219)  



● 1979, Ph.D. (Physics), Colorado State University, Ft. Collins, Colorado, U.S.A. 
● 1975, M.S. (Physics), Colorado State University, Ft. Collins, Colorado, U.S.A. 
● 1971, B.S. (Physics), Tunghai University, Taichung, Taiwan

Professional Experience

Current position:

2009-present, Professor and Tsing Hua Chair, Department of Physics and Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, Taiwan


National Tsing Hua University, Hsinchu, Taiwan

    Vice-President, Office of Research & Development (2/14  to 7/16)

    Director, Operation-Center for Industrial Collaboration (2/14 to 7/16)

    Director, Center for Photonics Research (8/09 to 7/14)

    Professor and Chairman, Department of Physics (8/11 to 1/14)

    Professor, Department of Physics (2/09 to date)

        Institute of Photonics Technologies (joint appointment)

● National Chiao Tung University, Hsinchu, Taiwan
    University Chair Prof., 11/03 to 01/09
    Chair, Department of Photonics, 8/04 to 7/06
    Prof., Inst. Electro-Opt. Eng., 8/87 to 01/09
    Chair, Inst. Electro-Opt. Eng., 8/92 through 7/95
    Assoc. Prof., Inst. Electro-Opt. Eng., 2/81 through 7/87

● National Science Council, R.O.C.
    Coordinator, Optics & Photonics Program, 1/96 through 12/99

● The Chinese University of Hong Kong, Shatin, NT, Hong Kong
    Visiting Prof., Dept. of Electronic Engn., 1/08 to 6/08

● Osaka University, Osaka, Japan
    Guest Prof., Institute of Laser Engineering, 3/04 to 6/04

● University of California, Berkeley, California, USA
    Visiting Scholar, Depts. Of Physics and EECS, 2/86 through 1/87

● Colorado State University, Ft. Collins, Colorado, USA
    Postdoctoral Fellow, Chem. Dept., 8/79 through 1/81

● Marine Corps, Taiwan, ROC
    2nd Lt. (Mandatory Military Service), 9/71 through 6/73 

Honors and Awards

● Member, the Phi Tau Phi Honor Society, elected 1991.
● NSC Outstanding Research Award, ‘90-‘92, ‘92-‘94, ‘94-‘96.
● NSC Research Fellow, ‘96 –‘02.
● Merit NSC Research Fellow Award, 2002.
● Fellow, Photonic Society of Chinese Americans (PSC), 1998.
● Y. Z. Hsu Communication and Photonics Chair, 2003.
● Fellow, the Optical Society (OSA), 2004.
● Fellow, International Society of Optical Engineering. (SPIE), 2004.
● Academic Award, Ministry of Education, 2004.
● Engineering Medal, the Optical Engineering Society (ROCOES), 2004.
● Fellow, Physical Society of the Republic of China (PSROC), 2005.
● Outstanding Engineering Professor Award, the Chinese Institute of Engineers,2006.
● Pan Wan Yuen Research Excellence Award, 2007.   
● NSC “Science-50” citation, 2008.

● Chair, the Univ. System of Taiwan, 1/09-12/11.
● Fellow, American Physical Society (APS), 2009.
Fellow, Institute of Electrical and Electronic Engineers (IEEE), 2012.
 Outstanding Scholarship Award, Foundation For The Advancement of  Outstanding Scholarship, 2012-2015.
 TECO Award, TECO Technology Foundation, 2012.

● Outstanding Alumni Award, Tunghai University, 2013.

● Academian, Asia Pacific Academy of Materials, 2013.

Research Fields

  1. Laser Science

  2. Ultrafast Optics and Optoelectronics

  3. THz Optics and Photonics

  4. Liquid Crystal Optics and Photonics

Current Research projects  (Updated on November 25, 2016)

[ 1 ] Functional THz Photonic Elements and their Applications  (MOST, Aug. 1, 2015-July 31, 2018)

    We propose to study terahertz functional photonic component and modules for the photonics-enabled post 5G network. These would be potentially useful for applications in (i) multi-gigabit THz wireless-over-fiber communication services; (ii) photonic generation of sub-millimeter waves and signal processing; (iii) photonics-based high-spatial-resolution 3D imaging Radar.

[ 2 ] Generation and applications of Intense Coherent THz Radiation (II) (MOST, August 1. 2016 - July 31, 2017)

    Intense terahertz (THz) pulses are essential for studying the interaction of THz-waves with matter. It would also enable important technological fields such as THz nonlinear optics and quantum optic. Our group has already made initiate studies in this field. For intense THz pulses generated by gaseous plasma, we propose a theoretical and experimental study using tailored femtosecond waveforms synthesized by 3-colors (fundamental, second and third harmonics of a Ti: Sapphire laser). We estimated this approach could yield an order-of-magnitude improvement in conversion over previous reports using 2-color excitation. Concurrently, we will explore generation of intense THz pulses by using Tilted Pulse Front Pumping in relatively heavily doped MgO: LiNbO3. Our preliminary studies indicate that such crystals exhibit appealing characteristics of high saturation threshold. As a result, power scaling would be feasible. We could generate microjoule-level THz pulses with a pumping energy of 1 millijoule. The two approaches are complementary: the first one generating broadband radiation while the second one for the highest energy. Besides using such THz pulses for studying of materials, we will explore the potential applications to diagnostics of fs-laser-excited electron beams and seeding of a THz FEL. Both above studies would be in collaboration with researchers of the NSRRC. 

[ 3 ] Research and Development of kilowatt-class Yb-doped fiber lasers and applications, PI (MOST Industrial co-op with Cleverwave Corp. , Nov. 1, 2016- Oct. 31, 2017)

    Industry 4.0 has become the mainstream trust of today’s manufacturing industry. The manufacturing sector will require intelligent production lines to be able to meet the highly adaptive, efficient use of resources, and integrate various manufacturing processes. In the past decades, laser processing has been proven to be very convenient and efficient processing tools. Laser technology, therefore, is widely used in manufacturing, Taiwan as well. The key element for laser processing i.e. : the “Laser source”, however is still mostly imported from abroad. Therefore, how to overcome the so-called “head-less” issue is critical for Taiwan.

    Fiber laser is a rising star for laser processing. These lasers exhibit high energy conversion efficiency, good beam quality, compactness, and low cost. It can be operated with low and high output energy, pulsed or continuous wave (CW) mode. High power CW fiber lasers with excellent beam performance, can be used in cutting, marking, drilling, welding for metal material.

    In collaboration with Cleverwave Technology Inc. (虹竣科技), we propose to develop high power CW fiber laser technology. We expect to develop output power approaching 800 watts in a prototype system. The ultimate goal is research and development of a kilowatts-class CW fiber laser. The specifications of these lasers will be comparable to those listed by international companies. The possible applications of this technology such as high-speed metal cutting, drilling, welding, including sintering for 3D printing of high-hardness metallic objects will also be explored.

[ 4 ] High-energy noise-like-pulse fiber laser for material processing (II) PI (MOST Industrial co-op with Precision Fiber Optic Corp. , May. 1, 2016- April 30, 2017)

    This project aims to develop noise-like pulse lasers with relatively high pulse energy. Such pulses can propagate a length of dispersive media without distortion. Through a new design, we expect to generate laser output power approximately an order of magnitude higher than previous designs. This is achieved through the use custom-designed large-core active and passive fibers. We will investigate the mechanisms of generating such unique pulses and explore their applications in laser-material interaction, e.g., processing of materials.

Selected Publications

  1. F. Ganikhanov, G. -R. Lin, W. -C. Chen, C. -S. Chang, and Ci-Ling Pan*, “Subpicosecond carrier lifetimes in arsenic-ion-implanted GaAs,” Appl. Phys. Lett., vol. 67, No. 23, pp. 3465 - 3467, Dec. 4, 1995 (One of the first papers demonstrating the potential of GaAs:As+ as an ultrafast photoconductor). See also, Gong-Ru Lin, Wen-Chung Chen, Shyh-Chin Chao, C.-S. Chang, Kaung-Hsiung Wu, T. M. Hsu, W. C. Lee, and , Ci-Ling Pan* “Material and Ultrafast Optoelectronic Properties of Highly Resistive Arsenic-ion-implanted GaAs,” IEEE J. Quantum Electron., Vol. 34, No. 9, pp. 1740 - 1748, September, 1998.
  2. Chi-Leun Wang and Ci-Ling Pan*, "Tunable Dual-wavelength Operation of a Diode Array with an External Grating-loaded Cavity", Appl. phys. Lett. Vol. 64, No. 23, pp. 3089 - 3091, June 6, 1994 (Generic laser cavity design for collinear, linearly polarized, tunable dual-wavelength output). See also, Ci-Ling Pan and Chi-Luen Wang, “A novel tunable dual-wavelength external-cavity laser diode array and its applications,” invited paper, Optical and Quantum Electronics Vol. 28, No. 10, pp. 1239 - 1257, October 1996, U.S. Patent. 5,524,012.
  3. T. R. Tsai, C. Y. Chen, C.-L. Pan*, R.-P. Pan and X.-C. Zhang, “THz Time-Domain Spectroscopy Studies of the Optical Constants of the Nematic Liquid Crystal 5CB,” Appl. Opt., Vol. 42, No. 13, pp. 2372-2376, May 2003 (The first THz-TDS studies of nematic liquid crystal and shows that birefringence of NLC at THz frequencies is as large as that in the visible, thus opening possibilities of applications of LC in THz photonics). See also, Chan-Shan Yang, Chia-Jen Lin, Ru-Pin Pan*, Christopher Que, Kohji Yamamoto, Masahiko Tani, and Ci-Ling Pan*, “The Complex Refractive Indices of the Liquid Crystal Mixture E7 in the THz Frequency Range,” J. Opt. Soc. Am. B, Vol. 27, No. 9, pp. 1866-1873, September, 2010.
  4. Ci-Ling Pan*, Jin-Yuen Zhang, Jung Y. Huang, and Chao-Kuei Lee, A blue-light generating Femtosecond wavelength-tunable Non-collinear Optical Parametric Amplifier,” US patent 7106498 B2, Sept. 12, 2006. (Femtosecond laser pulses that are tunable from 380 to 460 nm are directly generated the BBO OPA crystal, Taiwan patent I239128), see also Chao-Kuei Lee, Jin-Yuan Zhang, J. Y. Huang and Ci-Ling Pan, “Generation of Femtosecond Laser Pulses Tunable from 380 nm to 465 nm via Cascaded Nonlinear Optical Mixing in a Noncollinear Optical Parametric Amplifier with a Type-I Phase Matched BBO Crystal,” Optics Express, Vol. 11, No. 14, pp. 1702-1708, July 14 2003; Chao-Kuei Lee, Jin-Yuan Zhang, J. Y. Huang and Ci-Ling Pan, “Theoretical and Experimental Studies of tunable UV/Blue Femtosecond Pulses in a 405nm-pumped Type-I b-BBO Non-collinear Optical Parametric Amplifier,” J. Opt. Soc. Am. B, Vol. 21, No. 8, pp. 1494-1499, August 2004.
  5. Chao-Yuan Chen, Cho-Fan Hsieh, Yea-Feng Lin, Ru-Pin Pan*, and Ci-LingPan*, “Magnetically Tunable Room-Temperature 2P Liquid Crystal Terahertz Phase Shifter,” Opt. Exp., Vol. 12, No. 12, pp. 2625-2630 June 14, 2004 (The first room-temperature tunable 2p THz phase shifter). See also Chao-Yuan Chen, Tsong-Ru Tsai, Ci-Ling Pan, and Ru-Pin Pan, “Room  Temperature Terahertz Phase Shifter Based on Magnetically Controlled Birefringence in Liquid Crystals,” Appl. Phys. Lett., Vol. 83, No. 22, pp. 4497-4499, December 1, 2003.
  6. Tze-An Liu, Masahiko Tani, and Makoto Nakajima, Ci-Ling Pan*, “Ultrabroadband terahertz field detection by photoconductive antennas based on multi-energy arsenic-ion-implanted GaAs and semi-insulating GaAs,” Appl. Phys. Lett., Vol. 83, No. 7, pp. 1322-1324, August 18 2003. (broadest reported to date for antennas fabricated on ion-implanted materials) see also, Tze-An Liu, et al. “Ultrabroadband terahertz field detection by photoconductive antennas based on proton-bombarded InP,” Opt. Exp., Vol. 12, No.13, pp. 2954-2959, June 28, 2004.
  7. Yi-Chao Wang, Jia-Min Shieh, Hsiao-Wen Zan and Ci-Ling Pan* “Near-infrared femtosecond laser crystallized poly-Si thin film transistors,” Opt. Exp., Vol. 15, No. 11, pp. 6981-6986, May 28, 2007 (Demonstrated potential application of ultrafast athermal annealing for TFT applications); see also, Jia-Min Shieh, Zun-Hao Chen, Bau-Tong Dai, Yi-Chao Wang, Alexei Zaitsev, and Ci-Ling Pan*, “Near-Infrared Femtosecond Laser-induced Crystallization of Amorphous Silicon,” Appl. Phys. Lett., Volume 85, Issue 7, pp. 1232-1234, August 16, 2004.
  8. W. –J. Chen*, H. –Z. Wang, R. –Y. Lin, C. –K. Lee, and C. –L. Pan,* “Attosecond pulse synthesis and arbitrary waveform generation with cascaded harmonics of an injection-seeded high-power Q-switched Nd:YAG laser,” Laser Phys. Lett., Vol. 9, No. 3, pp. 212-218, 2012. (A simple and low-cost approach to attosecond pulse synthesis and arbitrary waveform generation). See also, Wei-Jan Chen, Jhi-Ming Hsieh, Shu Wei Huang, Hao-Yu Su, Chien-Jen Lai, Tsung-Ta Tang, Chuan-Hsien Lin, Chao-Kuei Lee, Ru-Pin Pan, Ci-Ling Pan, and A. H. Kung, “Sub-Single-Cycle Optical Pulse Train with Constant Carrier Envelope Phase,” Phys. Rev. Lett., Vol. 100, art. 163906, April 25, 2008.
  9. Yu-Tai Li, J.-W. Shi, C.-Y. Huang, N.-W. Chen, S.-H. Chen, J.-I. Chyi, Yi-Chao Wang, Chan-Shan Yang and Ci-Ling Pan*, “Characterization and Comparison of GaAs/AlGaAs Uni-Traveling Carrier and Separated-Transport-Recombination Photodiode Based High-Power Sub-THz Photonic-Transmitters,” IEEE J. Quantum Electron., Vol. 46, No. 1, pp. 19-27, January 2010. (Progress towards radio-over-fiber wireless data transmission up to 20 Gbit/s at 0.1 THz). See also, J.-W. Shi, C.-B. Huang, and Ci-Ling Pan*, “Millimeter-wave Photonic Wireless Links for Very-High Data Rate Communication,” invited review article, NPG Asia Materials, Vol. 3, No. 2, pp. 41-48, April 2011.
  10. Alexey Zaytsev*, Chih-Hsuan Lin, Yi-Jing You, Chia-Chun Chung, Chi-Luen Wang, and Ci-Ling Pan*, “Supercontinuum generation by noise-like pulses transmitted through normally dispersive standard single-mode fibers,” Optics Express, Vol. 21, No. 13, pp. 16056-16062, July 1, 2013. (Novel fiber-laser-based approach to supercontinuum generation) See also, A. K. Zaytsev*, C. H. Lin, Y. J. You, F. H. Tsai, C. L. Wang and C. L. Pan*, “Controllable noise-like operation regime in Yb:doped dispersion-mapped fiber ring laser,” Laser Phys. Lett., Vol. 10, No. 4, art. 045104, April 2013.
All Publications 


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