Photo of Iam-Choon Khoo

Iam-Choon Khoo

William E. Leonhard Professor of Electrical Engineering

Affiliation(s):

  • School of Electrical Engineering and Computer Science
  • Electrical Engineering

216 Electrical Engineering East

ick1@psu.edu

814-863-2299

Personal or Departmental Website

Research Areas:

Interest Areas:

Liquid crystals, Nonlinear Optics, Electro-Optics, Lasers, eye/sensor protection, optical physics, optical materials

 
 

 

Education

Publications

Journal Articles

  • Iam-Choon Khoo, 2017, "Large three-dimensional photonic crystals based on monocrystalline liquid crystal blue phasesLarge three-dimensional photonic crystals based on monocrystalline liquid crystal blue phases", Nature Communication
  • Iam-Choon Khoo, 2017, "Ultrafast optical signal processing with Bragg structures", Applied Science, pp. 16
  • Iam-Choon Khoo, 2017, "Tunable enhanced spontaneous emission in plasmonic waveguide cladded with liquid crystal and low-index metamaterial", Optics Express, pp. 12
  • Iam-Choon Khoo, 2016, "A 2D/3D Switchable Directional-backlight Auto-stereoscopic Display Using Polymer Dispersed Liquid Crystal Films", IEEE/OSA Journal of Display Technology
  • Iam-Choon Khoo, Chun-Wei Chen and Tsung-Jui Ho, 2016, "Observation of photorefractive effects in Blue-phase liquid crystal containing Fullerene-C60", Opt. Letters
  • Iam-Choon Khoo, 2015, "Lasing Properties of a Dye-doped Cholesteric Liquid Crystal Using an Aggregation-induced-emission Material"
  • Iam C Khoo, Shuo Zhao, Chun-Wei Chen and Tsung-Jui Ho, 2015, "Maxwell Stress induced flow- deformation and optical nonlinearities in liquid crystals", Progress in Electromagnetic Research
  • Iam-Choon Khoo, 2015, "Dynamical studies of the mechanisms for optical nonlinearities of methyl-red dye doped blue phase liquid crystals", Optics Express
  • Iam-Choon Khoo, 2015, "Electrically Controllable Self-assembly for Radial Alignment of Gold Nanorods in Liquid Crystal Droplets", Optical Material Express
  • Iam-Choon Khoo, 2015, "Computation of Refraction Angle in Nanosphere Dispersed Liquid Crystal Hyperbolic Metamaterial: a Tutorial", Nonlinear Optics, Quantum Optics: Concepts in Modern Optics
  • Iam-Choon Khoo, 2015, "Dc-field assisted grating formation and nonlinear diffraction in Methyl-red dye-doped blue-phase liquid crystals", OPTICS LETTERS
  • Joanna Ptasinski, Iam-Choon Khoo and Yeshaiahu Fainman, 2014, "Enhanced optical tuning of modified-geometry resonators clad in blue phase liquid crystals", 39, (18), pp. 5435-5438
  • Iam-Choon Khoo, 2014, "Nonlinear Optics, Active Plasmonic and Tunable Metamaterials with Liquid Crystals", Progress in Quantum Electronics, 38, (2), pp. 77-117
  • Iam-Choon Khoo and S. Zhao, 2014, "Multiple Time Scales Optical Nonlinearities of Liquid Crystals for Optical-Terahertz-Microwave Applications", Progress in Electromagnetic Research PIER, 147, pp. 37-56
  • Joanna Ptasinski, Iam-Choon Khoo and Yeshaiahu Fainman, 2014, "Passive Temperature Stabilization of Silicon Photonic Devices Using Liquid Crystals", Materials, 7, (3), pp. 2229-2241
  • G. Pawlik, G. Pawlik, W. Walasik, K. Tarnowski, A. C. Mitus and Iam-Choon Khoo, 2014, "Liquid crystal hyperbolic metamaterial for wide-angle negative-positive refraction and reflection", Optics Letters, 39, (7), pp. 1744-1747
  • Iam-Choon Khoo, C. W. Chen, K. L. Hong, T. H. Lin and S. Zhao, 2014, "Nonlinear Optics of Nematic and Blue Phase Liquid Crystals", Molecular Crystals Liquid Crystals, 594, (1), pp. 31-41
  • Rui Luo, Ying Gu, Xiankuo Li, Luojia Wang, Iam-Choon Khoo and Qihuang Gong, 2013, "Mode recombination and alternation of surface plasmons in anisotropic mediums", Appl. Phys. Letts., 102, (011117)
  • Iam-Choon Khoo, Kuan Lung Hong, Shuo Zhao, Ding Ma and Tsung-Hsien Lin, 2013, "Blue-phase liquid crystal cored optical fiber array with photonic bandgaps and nonlinear transmission properties", Optics Express, 21, (4), pp. 4319-4327
  • C. W. Chen, H. C. Jau, C. H. Lee, C. C. Li, C. T. Hou, C. W. Wu, T. H. Lin and Iam-Choon Khoo, 2013, "Temperature dependence of refractive index in blue phase liquid crystals", Optical Materials Express, 3, (5), pp. 527-532
  • Joanna Ptasinski, Sung W. Kim, Lin Pang, Iam-Choon Khoo and Yeshaiahu Fainman, 2013, "Optical tuning of silicon photonic structures with nematic liquid crystal claddings", Optics Letters, 38, (12), pp. 2008-2010
  • A. Piccardi, A. Alberucci, O. Buchnev, M. Kaczmarek, Iam-Choon Khoo and G. Assanto, 2013, "Frequency-Controlled Routing of Self-Confined Beams in Nematic Liquid Crystals", Mol. Cryst. Liq. Cryst., 573, pp. 26-33
  • Liyan Song, Shenhe Fu, Yikun Liu, Jianying Zhou, Vladimir G. Chigrinov and Iam-Choon Khoo, 2013, "Direct femtosecond pulse compression with miniature-sized Bragg cholesteric liquid crystal", Optics Letters, 38, pp. 5040-5042
  • G. Pawlik, W. Walasik, K. Tarnowski, A. C. Mitus and Iam-Choon Khoo, 2013, "k-vector angular correlations in negative refraction for TM polarization in nanosphere dispersed liquid crystal (NDLC) metamaterial", 8901
  • Iam-Choon Khoo, Yana Williams, Andres Diaz, Kan Chen, J. Bossard, D. Werner, E. Graugnard and C. J. Summers, 2006, "Liquid-Crystals for optical filters, switches and tunable negative index material development", Molecular Crystal Liquid Crystal, 453, pp. 309-319
  • Iam-Choon Khoo, D. H. Werner, X. Liang, A. Diaz and B. Weiner, 2006, "Nano-sphere dispersed liquid crystals for tunable negative-zero-positive index of refraction in the optical and Terahertz regimes", Optics Letters, 31, pp. 2592
  • Jae-Hong Park and Iam-Choon Khoo, 2006, "Liquid crystal beam deflector with a photopolymer prism", Molecular Crystal Liquid Crystal, 454, pp. 135-143
  • Iam-Choon Khoo, Kan Chen and Y. Zhang Williams, 2006, "Orientational Photorefractive Effect in undoped and CdSe Nano-Rods doped Nematic Liquid Crystal - Bulk and Interface Contributions", IEEE J. Selcted Topics in Quantum Electronics JSTQE 12, pp. 3
  • Iam-Choon Khoo and Chun-Wei Chen, , "Ultrafast pulse compression, stretching-and-recompression using cholesteric liquid crystals", Optics Express
  • Iam-Choon Khoo and Chun-Wei Chen, , "All-optical transistor- and diode-action and logic gates based on anisotropic nonlinear responsive liquid crystal", Scientific Reports
  • Iam-Choon Khoo, Chun-Wei Chen and Tsung-Jui Ho, , "High efficiency holographic Bragg grating with optically prolonged memory", Scientific Reports
  • Iam-Choon Khoo, , "Slowing ultrafast (600 femtoseconds) laser pulse with a 550µm-thick cholesteric liquid crystalSlowing ultrafast (600 femtoseconds) laser pulse with a 550µm-thick cholesteric liquid crystal", Optical Material Express, pp. 5

Conference Proceedings

  • Joanna N. Ptasinski, Sung W. Kim, Ling Pang, Iam-Choon Khoo and Yeshaiahu Fainmana, 2014, "Liquid crystal claddings for passive temperature stabilization of silicon photonics", SPIE, Liquid Crystal Conference XVIII, 9182, pp. 3
  • S. Zhao, K. L. Hong and Iam-Choon Khoo, 2014, "Transient responses of liquid crystals for optical switching and passive mitigation of intense light sources in the sub-microseconds to nanoseconds time scale", SPIE, Liquid Crystal Conference XVIII, 9182, pp. 5
  • G. Pawlik, W. Walasik, K. Tarnowski, A. C. Mitus and Iam-Choon Khoo, 2013, "Negative refraction for TM polarization in nanosphere dispersed liquid crystal (NDLC) metamaterial", Proceedings of SPIE, LIQUID CRYSTALS XVII, 8828
  • J. N. Ptasinski, S. W. Kim, L. Pang, Iam-Choon Khoo and Y. Fainman, 2013, "Active electrical and optical tuning of silicon photonic devices with liquid crystals", Proceedings of SPIE, Liquid Crystal Conference XVII, 8828

Research Projects

  • August 2017 - July 2019, "Liquid-crystalline photonic crystals for High efficiency Bragg grating and ultrafast pulse modulation," (Sponsor: Azimuth Corporation).
  • May 2016 - April 2017, "DURIP: Streak Camera Ultrafast Spectroscopy and Imaging System for Emerging Photonic Materials Exploration," (Sponsor: Air Force Office of Scientific Research).
  • August 2014 - August 2017, "Studies of Nonlinear Photonics of Blue-Phase Liquid Crystalline Materials," (Sponsor: Air Force Office of Scientific Research).
  • August 2014 - August 2017, "Studies of Nonlinear Photonics of blue-Phase Liquid Crystalline Materials," (Sponsor: Air Force Office of Scientific Research).
  • June 2016 - June 2017, "Streak Camera Ultrafast Spectroscopy System for Novel Photonic Materials," (Sponsor: Air Force Office of Scientific Research).
  • June 2008 - March 2011, "Development of Visible Near Infrared Sensor Protection Materials and Imaging Optics for Multiple Time Scale Operations," (Sponsor: Air Force Office of Scientific Research).
  • April 2008 - September 2011, "Electrical Engineering Research Experience for Undergraduates (EEREU) at Penn State University," (Sponsor: National Science Foundation).
  • December 2009 - March 2011, "Active Electro-Optical Metamaterial Filters for Sensor Protection Applications," (Sponsor: Air Force Research Laboratory).
  • December 2009 - March 2011, "Active Electro-Optical Metamaterial Filters for Sensor Protection Applications," (Sponsor: Air Force Research Laboratory).
  • September 2006 - January 2011, "Tunable and reconfigurable negative index materials with low loss," (Sponsor: Purdue University).
  • September 2006 - August 2011, "Tunable and reconfigurable negative index materials with low loss," (Sponsor: Purdue University).
  • September 2006 - January 2010, "Tunable and reconfigurable negative index materials with low loss," (Sponsor: Purdue University).
  • June 2008 - November 2010, "Development of Visible Near Infrared Sensor Protection Materials and Imaging Optics for Multiple Time Scale Operations," (Sponsor: Air Force Office of Scientific Research).
  • April 2008 - March 2010, "Electrical Engineering Research Experience for Undergraduates (EEREU) at Penn State University," (Sponsor: National Science Foundation).
  • April 2008 - March 2009, "Electrical Engineering Research Experience for Undergraduates (EEREU) at Penn State University," (Sponsor: National Science Foundation).
  • June 2008 - November 2009, "Development of Visible Near Infrared Sensor Protection Materials and Imaging Optics for Multiple Time Scale Operations," (Sponsor: Air Force Office of Scientific Research).
  • September 2006 - August 2009, "Tunable and Reconfigurable Optical Negative Index Materials with Low Losses," (Sponsor: Purdue University).
  • September 2006 - August 2009, "Tunable and Reconfigurable Optical Negative Index Materials with Low Losses," (Sponsor: Purdue University).
  • June 2006 - June 2009, "Molecular Photonics: High-Speed Materials for Optical Signal Processing," (Sponsor: Georgia Institute of Technology).
  • June 2006 - June 2009, "Molecular Photonics: High-Speed Materials for Optical Signal Processing," (Sponsor: Georgia Institute of Technology).
  • June 2006 - June 2009, "Molecular Photonics: High-Speed Materials for Optical Signal Processing," (Sponsor: Georgia Institute of Technology).
  • September 2006 - August 2009, "Tunable and reconfigurable negative index materials with low loss," (Sponsor: Purdue University).
  • September 2006 - August 2009, "Tunable and reconfigurable negative index materials with low loss," (Sponsor: Purdue University).
  • May 2005 - February 2008, "Development of multifunctional ultra-nonlinear liquids and liquid crystals for sensor protection applications," (Sponsor: U.S. Department of the Air Force).
  • June 2008 - November 2008, "Development of Visible Near Infrared Sensor Protection Materials and Imaging Optics for Multiple Time Scale Operations," (Sponsor: Air Force Office of Scientific Research).
  • May 2005 - November 2007, "Development of multifunctional ultra-nonlinear liquids and liquid crystals for sensor protection applications," (Sponsor: U.S. Department of the Air Force).
  • August 2003 - January 2006, "Extreme Nonliner Optics with Liquid Crystals," (Sponsor: U.S. Department of the Army).
  • August 2003 - October 2006, "Extreme Nonliner Optics with Liquid Crystals," (Sponsor: U.S. Department of the Army).
  • October 2004 - September 2006, "Nonlinear Optical Fiber Arrays for Optical Limiting Applications," (Sponsor: U.S. Department of the Navy).
  • May 2005 - November 2006, "Development of multifunctional ultra-nonlinear liquids and liquid crystals for sensor protection applications," (Sponsor: U.S. Department of the Air Force).
  • June 2001 - July 2006, "Photosensitive and Supra-Nonlinear Liquid Crystal (PSNLC) Films," (Sponsor: Georgia Institute of Technology).
  • June 2001 - November 2005, "Photosensitive and Supra-Nonlinear Liquid Crystal (PSNLC) Films," (Sponsor: Georgia Institute of Technology).
  • July 2002 - June 2005, "To Strengthen Nanotechnology Research in Pennsylvania," (Sponsor: COP: Department of Community and Economic Development).
  • May 2005 - November 2005, "Development of multifunctional ultra-nonlinear liquids and liquid crystals for sensor protection," (Sponsor: U.S. Department of the Air Force).
  • July 2002 - June 2005, "To Strengthen Nanotechnology Research in Pennsylvania," (Sponsor: COP: Department of Community and Economic Development).
  • August 2003 - January 2005, "Extreme Nonliner Optics with Liquid Crystals," (Sponsor: U.S. Department of the Army).
  • August 2003 - January 2004, "Extreme Nonliner Optics with Liquid Crystals," (Sponsor: U.S. Department of the Army).
  • June 2001 - November 2004, "Photosensitive and Supra-Nonlinear Liquid Crystal (PSNLC) Films," (Sponsor: Georgia Institute of Technology).

Honors and Awards

  • Honorary Chair Professorship, National Sun Yat-Sen University, Taiwan, August 2017 - July 2020

Service

Service to Penn State:

  • Committee Work, Committee Member, PSU, Fellow committee, January 2017 - December 2017
  • Committee Work, Committee Member, PSU, Electro-Optics Ph. D. candidacy exam. committee, January 2017 - December 2017
  • Committee Work, Committee Member, PSU, Graduate Committee, January 2017 - December 2017
  • Committee Work, Committee Member, PSU, Graduate Committee, January 2016 - December 2016
  • Committee Work, Committee Member, PSU, Electro-Optics Ph. D. candidacy exam. committee, January 2016 - December 2016
  • Committee Work, Committee Member, PSU, Associate Dean Search, May 2016 - August 2016
  • Committee Work, Committee Member, PSU, EE Advisory Committee, January 2016 - April 2016
  • Committee Work, Committee Member, PSU, Chair Professor and Distinguished Professor Evaluation/Review, September 2016 - March 2017

Service to External Organizations:

  • Organizing Conferences and Service on Conference Committees, Chairperson, Liquid Crystals Conference, January 2017 - December 2017
  • Organizing Conferences and Service on Conference Committees, Co-Chairperson, Ultrafast Nonlinear Imaging and Spectroscopy IV, January 2017 - December 2017
  • Organizing Conferences and Service on Conference Committees, Co-Chairperson, International Topical Meeting on Novel Optical Materials and Applications, January 2017 - December 2017
  • Service to Governmental Agencies, External Reviewer, Hong Kong Government Research Council, January 2017 - December 2017
  • Organizing Conferences and Service on Conference Committees, Co-Chairperson, Progress in Electromagnetic Research, January 2017 - December 2017
  • Service to Public and Private Organizations, Editor, Journal of Nonlinear Optical Physics and Materials - Editor-in-Chief, January 2017 - December 2017
  • Service to Public and Private Organizations, Board Member, Journal Editorial Board - Advanced Device Material [Elsevier], January 2017 - December 2017
 


 

About

The School of Electrical Engineering and Computer Science was created in the spring of 2015 to allow greater access to courses offered by both departments for undergraduate and graduate students in exciting collaborative research in fields.

We offer B.S. degrees in electrical engineering, computer science, computer engineering and data science and graduate degrees (master's degrees and Ph.D.'s) in electrical engineering and computer science and engineering. EECS focuses on the convergence of technologies and disciplines to meet today’s industrial demands.

School of Electrical Engineering and Computer Science

The Pennsylvania State University

207 Electrical Engineering West

University Park, PA 16802

814-863-6740

Department of Computer Science and Engineering

814-865-9505

Department of Electrical Engineering

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