Xuejun Lu

Expertise

Research Interests

Optoelectronics, Nanophotonics & Fiber Optics

Prof. Xuejun LuÍs research interests include longwave infrared (LWIR) focal plane array (FPA), Multi-color (band) IR sensors; LWIR image amplifier; Flexible thin-film transistors; Printable electronics; chemical sensor; Single quantum dot emitters; Tera-hertz (THz) quantum dot photodetectors; LWIR Electro-optic modulators based on intersubband transitions and high-quality ultra-uniform quantum dot growth techniques.

Education

• Ph D, (2001), The University of Texas - Austin, Texas
  Dissertation/Thesis Title: High-performance Thermo-optic Switch and Electro-optic Modulator Based on Polymeric Multi-mode Optical Waveguide with High Device Packing Density for Optical Network Application
• MS, (1995), Beijing (Peking) University, Beijing, China - Beijing, China
  Dissertation/Thesis Title: Experimental Study of an External Cavity Laser based on Faraday Anomalous Dispersion Atomic Filter
• BS: Chemistry, (1992), Beijing (Peking) University, Beijing - Beijing, China
  Dissertation/Thesis Title: Experimental Study of Dealuminum of Molecular Sieve

Selected Awards and Honors

• IDTechEx Academic Research and Development Award (2009), Scholarship/Research - IDTechEx
• (2007)
• Air Force summer faculty award (2007) - Kirtland AFB
• Committee member and session Chair (2007) - Photonics Asia, Beijing, China.
• Session co-Chair, Advanced photodetector section (2007), Scholarship/Research - Kirtland AFB
• Air Force summer faculty award. (2006) - Wright Patterson AFB
• Committee member and session chair. (2004) - Photonics Asia, Beijing, China.

Selected Publications

• Lu, X., Vaillancourt, J., Gu, G. (). A plasmonic perfect absorber enhanced longwave infrared quantum dot infrared photodetector with high quantum efficiency. J. Phys. D: Appl. Phys, AIP Advances.
• Kemsri, T., Gu, G., Zhang, Y., Lanc, X., Zhang, H., Tice, J., Lu, X. (). Angular-dependent photodetection enhancement by a metallic circular disk optical antenna. AIP Advances.
• Vaillancourt, J., Blasch, E., Gu, G., Lu, X., Reinhardt, K. (2016). A Demonstration of On-Chip Self-Registered Image Fusion Using a Voltage-Tunable Mid-Wave and Long-Wave Infrared Dual-Band Focal Plane Array. IEEE Sensors Journal, 16(11) 4374 - 4379.
• Zhang, Y., Vaillancourt, J., Gu, G., Guo, W., Lu, X. (2016). Quantum selection rule dependent plasmonic enhancement in quantum dot infrared photodetectors. Journal of Applied Physics, 119(19).
• Mojaverian, N., Gu, G., Lu, X. (2015). A plasmonic dipole optical antenna coupled quantum dot infrared photodetector. Journal of Physics D: Applied Physics, 48(47).
• Lan, X., Lu, X., Blumenthal, T., Fratello, V., Chan, W., Truong, M., Kiyono, K., Zhang, Y., Gu, G., Tan, M. (2015). Ultra-wideband microwave components fabricated using low-cost aerosol-jet printing technology (2015-June: pp. 156-158). IEEE Computer Society
• Gu, G., Vaillancourt, J., Lu, X. (2014). Analysis of near-field components of a plasmonic optical antenna and their contribution to quantum dot infrared photodetector enhancement. Optics Express, 22(21) 24970-24976.
• Gu, G., Vaillancourt, J., Lu, X. (2014). Backside configured surface plasmonic enhancement (1590: pp. 195-199). American Institute of Physics Inc
• Vaillancourt, J., Mojaverian, N., Lu, X. (2014). Erratum: "A Longwave infrared focal plane array enhanced by backside-configured Plasmonic structures" (IEEE Photonics Technology Letters (2014) 26:8 (745-748)). IEEE Photonics Technology Letters, 26(23) 2412.
• Gu, G., Lu, X. (2014). Near-field vector analysis of plasmonic structures enhancement on infrared photodetectors (9163: pp. The Society of Photo-Optical Instrumentation Engineers (SPIE)). SPIE
• Gu, G., Mojaverian, N., Vaillancourt, J., Lu, X. (2014). Surface plasmonic resonance induced near-field vectors and their contribution to quantum dot infrared photodetector enhancement. Journal of Physics D: Applied Physics, 47(43).
• Gu, G., Lu, X. (2014). Comparison of two complementary surface plasmonic structures and their enhancement in infrared photodetectors (9070:). Proceedings of SPIE - The International Society for Optical Engineering
• Ling, Y., Zhang, H., Gu, G., Lu, X., Kayastha, V., Jones, C., Shih, W., Janzen, D. (2014). A printable CNT-based FM passive wireless sensor tag on a flexible substrate with enhanced sensitivity. IEEE Sensors Journal, 14(4) 1193-1197.
• Vaillancourt, J., Mojaverian, N., Lu, X. (2014). A longwave infrared focal plane array enhanced by backside-configured plasmonic structures. IEEE Photonics Technology Letters, 26(8) 745-748.
• Gu, G., Vaillancourt, J., Vasinajindakaw, P., Lu, X. (2013). Backside-configured surface plasmonic structure with over 40 times photocurrent enhancement. Semiconductor Science and Technology, 28(10).
• Subbaraman, H., Pham, D., Xu, X., Chen, M., Hosseini, A., Lu, X., Chen, R. (2013). Inkjet-printed two-dimensional phased-array antenna on a flexible substrate. IEEE Antennas and Wireless Propagation Letters, 12 170-173.
• Ling, Y., Gu, G., Liu, R., Lu, X., Kayastha, V., Jones, C., Shih, W., Janzen, D. (2013). Investigation of the humidity-dependent conductance of single-walled carbon nanotube networks. Journal of Applied Physics, 113(2).
• Liu, R., Vasinajindakaw, P., Gu, G., Vaillancourt, J., Lu, X. (2013). Optimizing light absorption in quantum dot infrared photodetectors by tuning surface confinement of surface plasmonic waves. Journal of Physics D: Applied Physics, 46(1).
• Chen, M.Y., Pham, D., Subbaraman, H., Lu, X., Chen, R.T. (2012). Conformal Ink-Jet Printed -Band Phased-Array Antenna Incorporating Carbon Nanotube Field-Effect Transistor Based Reconfigurable True-Time Delay Lines. Microwave Theory and Techniques, IEEE Transactions on, 60(1) 179-184.
• Vasinajindakaw, P., Lu, X., Qian, X., Vangala, S., Goodhue, W. (2011). High-operating temperature (HOT) broadband quantum-dot infrared photodetector (pp. 80122X–80122X).
• Vaillancourt, J., Vasinajindakaw, P., Lu, X., Qian, X., Vangala, S., Goodhue, W.D. (2011). Thermo-electrically cooled shortwave infrared and longwave infrared dual-band quantum-dot photodetector (pp. 80120O–80120O).
• Vaillancourt, J., Vasinajindakaw, P., Hong, W., Lu, X., Qian, X., Vangala, S., Goodhue, W.D. (2010). A LWIR quantum dot infrared photodetector working at 298K (pp. 760821–760821).
• Hong, W., Vasinajindakaw, P., Vaillancourt, J., Zhang, H., Gu, G., Liu, R., Lu, X., Qian, X., Vangala, S., Goodhue, W.D. (2010). Multispectral infrared photodetector with carbon nanotube flexible electronic circuits (pp. 767906–767906).
• Ma, W.Q., Yang, X.J., Chong, M., Yang, T., Chen, L.H., Shao, J., Lu, X., Lu, W., Song, C.Y., Liu, H.C. (2008). Voltage tunable two-color InAs/GaAs quantum dot infrared photodetector. Applied Physics Letters, 93(1) 13502-13502.
• Lu, X., Meisner, M.J., Vaillancourt, J., Li, J., Liu, W., Qian, X., Goodhue, W.D. (2007). Modulation-doped InAs-InGaAs quantum dot longwave infrared photodetector with high quantum efficiency. Electronics Letters, 43(10) 589-590.
• Han, X., Janzen, D.C., Vaillancourt, J., Lu, X. (2007). Printable high-speed thin-film transistor on flexible substrate using carbon nanotube solution. Micro & Nano Letters, IET, 2(4) 96-98.
• Vaillancourt, J., Lu, X., Han, X., Janzen, D.C. (2006). High-speed thin-film transistor on flexible substrate fabricated at room temperature. Electronics Letters, 42(23) 1365-1366.

Selected Presentations

• Guiru Gu, Runyu Liu, Yunfeng Ling, and Xuejun Lu, Printed CNT transistors with high on-off ratio and linearity., 2011
• Jarrod Vaillancourt, Puminun Vasinajindakaw, Xuejun Lu, Xifeng Qian, Shivashankar R. Vangala and William D. Goodhue, Thermo-electrically cooled shortwave infrared and longwave infrared dual-band quantum-dot photodetector., 2011
• Puminun Vasinajindakaw, Xuejun Lu, Xifeng Qian, Shivashankar R. Vangala and William D. Goodhue, High-operating temperature (HOT) broadband quantum-dot infrared photodetector., 2011
• Jarrod Vaillancourt, Puminun Vasinajindakaw, Wen Hong, Xuejun Lu, Xifeng Qian, Shivashankar R. Vangala and William D. Goodhue, 'A LWIR Quantum Dot Infrared Photodetector working at 298K', 2010
• Wen Hong, PuminunVasinajindakaw, Jarrod Vaillancourt, Haiyan Zhang, Guiru Gu, Runyu Liu, Xuejun Lu, Xifeng Qian, Shivashankar R. Vangala and William D. Goodhue, "Multispectral infrared photodetector with carbon nanotube flexible electronic circuits., 2010
• Jarrod Vaillancourt and Xuejun Lu, Very longwave infrared (> 14 _m) quantum-dot photodetector. Jarrod Vaillancourt and Xuejun Lu, A monolithically integrated multi-spectral polarimetric quantum dot infrared photodetector., 2009
• Jarrod Vaillancourt and, Xuejun Lu, Smart photodetector and focal plane array,, 2009
• Jarrod Vaillancourt, Puminun Vasinajindakaw, and Xuejun Lu, A voltage-tunable multi-spectral 320x256 InAs/GaAs quantum-dot infrared focal plane array (FPA),, 2009
• Maggie Y. Chen, Xuejun Lu, Harish Subbaraman, and Ray T. Chen, Fully printed phased-array antenna for space communications, 2009
• High-speed transparent flexible electronics,, 2008
• Xuejun Lu, InAs quantum-dot intersubband optical amplifier,, 2008
• Xuejun Lu, Jarrod Vaillancourt, Mark J. Meisner, A voltage-tunable multiband quantum dot infrared focal plane array with high photodetectivity., 2008
• Xuejun Lu, Jarrod Vaillancourt, Voltage tunable hyper-spectral quantum dot infrared photodetector (QDIP) Xuejun Lu, Jarrod Vaillancourt, A voltage-tunable multiband quantum dot infrared focal plane array with high photodetectivity,, 2008
• Xuejun Lu, Xuping Zhang, Waveguide polarization decoding module for free-space quantum key distribution,, 2008
• Yu Han, Xuping Zhang, and Xuejun Lu The intelligent real-time protection device for mesh optical network, 2008
• A longwave infrared transparent flexible electronics by printing at room temperature,, 2007
• A miniature electro-optic switch array, 2007
• A quantum dot longwave infrared photodetector with integrated optical amplifier., 2007
• A two-photon sequential absorption photocurrent generation process in modulation doped InAs/GaAs quantum dots., 2007
• An all-optical nonlinear threshold gate based on high-order weakly coupled microring resonators with a low switching threshold,, 2007
• An electrically-controllable multi-spectral quantum dot infrared photodetector with high photodetectivity, 2007
• High-quality Ultra-uniform Quantum Dot (QD) Fabrication Techniques for High-performance Terahertz Quantum Cascaded Laser, 2007 - Beijing,China
• A thin-film transistor with high field-effect mobility by using carbon nanotubes - IEEE Nanotechnology Materials and Devices Conference, 2006
• An electro-optically tunable optical filter with an ultra-large wavelength tuning range - The international society for optical engineering, 2006
• A Longwave Infrared (LWIR) Photodetector Based on Nonlinear Absorption in InAs/GaAs Quantum Dots, - International Symposium on Biophotonics, Nanophotonics and Metamaterials, October 2006 - Hangzhou, China
• An InAs/GaAs quantum dot long wave infrared photodetector with high photodectivity at 180K, 2005
• Polymer waveguide optical CDMA encoder and decoder modules based on a new orthogonal coding scheme., 2005
• Superprism effect and light refraction and propagation in photonic crystals, 2005
• An adaptive optical filter based on thermo-optic (TO) polymeric waveguide lattice filters, 2004
• Polymeric Waveguide Based Optical Signal Processing Circuits, 2004
• Theoretical and experimental study of photonic-crystal based structures for optical communication applications, 2004
• Contact poling of the nonlinear optical film for polymer-based electro-optic modulator, 2002
• Polarization-insensitive thermo-optic switch based on multimode polymeric waveguides with high device packing density., 2001
• Polymetric waveguide beam deflector for electro-optic switching, 2001
• Thin film polymeric waveguide beam deflector based on thermo-optic effect., 2001
• 1x2 Y-fed directional coupler modulator based on electro-optic polymer, 2000
• Beam Deflection With Electro-Optic Polymer Waveguide Prism Array, 2000
• High-speed traveling-wave electrodes for polymeric electro-optic modulators, 1999
• Laser beam deflector based on a domain-inverted electro-optic polymeric waveguide prism array, 1999
• Linearized Y-coupler modulator based on a domain-inverted polymeric waveguide, 1999
• Thermo-optically tuned cascaded polymer waveguide taps, 1999
• Polymer-based highly multimode electro-optic waveguide modulator, 1998
• Theodore Grosch, Commercializing Technology - SPIE International Symposium on Photonic Sensors and Controls for Commercial Applications, 1994 - Boston MA.

Selected Intellectual Property

• Patent - Lu, X., Wang, S., Levinson, F."Integrated variable optical attenuator," 7235852 United States
• Patent - Lu, X., Liu, J., Wang, Z., Huang, Y."Scalable and exchangeable erbium doped fiber amplifier for DWDM," 7236700 United States
• Patent - Lu, X., Liu, J., Wang, Z., Huang, Y."Dual fiber optic amplifier with shared pump source," 7031051 United States
• Patent - Lu, X."A Long-wave InAs/GaAs Quantum Dot Infrared Photodetector Based on Two-photon Absorption Process with Ultra-low Noise Level," United States
• Patent - Lu, X., Liu, J., Wang, Z., Huang, Y."Staged amplifier for lower noise figure and higher saturation power," United States

Selected Contracts, Fellowships, Grants and Sponsored Research

• Smart Photodetector and Focal Plane Array (), - AFOSR, STTR Phase I with Applied NanoFemto technologies
  Lu, X.
• (2012), Grant - AFOSR
  Lu, X.
• Electrically Switchable Plasmonic Polarizers with High Extinction Ratio and Enhan (2012), -
  Lu, X. (Principal)
• New, GK-12: Vibes and Waves in Action: A Cross-Disciplinary Collaborative Network (2009), - NSF
  Lu, X.
• Photonic Antenna Enhanced MWIR/LWIR Photodetector with a High Operating Temperatu (2013), - AIR FORCE RESEARCH LABORATORY
  Lu, X. (Principal)
• Photonic Antenna Coupled Middle Wave Infrared Photodetector and Focal Plane Array (2012), Grant - NASA, STTR Phase I with Applied NanoFemto technologies
  Lu, X. (Co-Principal)
• Photonic Antenna Coupled Middle Wave Infrared Photodetector and Focal Plane Array (2012), Contract - NASA GODDARD SPACE FLIGHT CENTER
  Lu, X. (Principal)
• Smart photodetector and focal plane array with voltage-tunable multi-spectral pol (2009), Contract - AIR FORCE OFFICE OF SCIENTIFIC RESEARCH
  Lu, X. (Principal)
• Photonic Antenna Enhanced MWIR/LWIR Photodetector with a High Operating Temperatu (2012), - AIR FORCE RESEARCH LABORATORY
  Lu, X. (Principal)
• Adaptive multi-mode photodetector and focal plane array (2010), Contract - AIR FORCE OFFICE OF SCIENTIFIC RESEARCH
  Lu, X. (Principal)
• Low Dark Current Longwave and Far infrared Dual-band Quantum Dot Photodetector wi (2009), Grant -
  Lu, X. (Principal)
• Developing Coupled Quantum Dot Multi-Functional Materials (2011), - NSF
  Lu, X.
• Flexible and Extended Range Radio Frequency Identification Tags (2009), - NATIONAL SCIENCE FOUNDATION
  Lu, X. (Principal)
• Developing Coupled Quantum Dot Multi-Functional Materials for Optoelectronics Int (2009), - NATIONAL SCIENCE FOUNDATION
  Lu, X. (Principal)
• Adaptive multi-mode photodetector and focal plane array (2009), - AFOSR, STTR Phase I with Applied NanoFemto technologies
  Lu, X. (Co-Principal)
• A Fully Printed Flexible 4-bit 2D 16-element Phase Array Antennas (2009), Grant - NASA
  Lu, X. (Co-Principal)
• Low Dark Current Longwave and Far infrared Dual-band Quantum Dot Infrared Photodetector (2009), Grant - AFOSR
  Lu, X.
• Developing Infrared (IR) Transparent Conductive Electrode Technology (2008), - AFOSR
  Lu, X.
• A Fully Printed Flexible 4 BIT 2D (4X4) 16-Element Phased Array Antenna For Lunar (2009), - NASA GLENN RESEARCH CTR
  Lu, X. (Principal)
• Developing Infrared (IR) Transparent Conductive Electrode Technology for Multi-fu (2008), Grant -
  Lu, X. (Principal)
• Flexible and Extended Range Radio Frequency Identification Tags (2009), Grant - NSF
  Lu, X. (Co-Principal)
• Thermal-electrically cooled longwave infrared photodetectors and focal plane arra (2008), Grant -
  Lu, X. (Principal)
• A Quantum Dot Infrared Photodetector with Integrated Polarizer (2008), Grant -
  Lu, X. (Principal)
• A Long-Wave Infrared Focal Plane Array with Ultra-High Sensitivity and Large Fiel (2007), Grant - U.S. DEPARTMENT OF THE AIR FORCE
  Lu, X. (Principal)
• Printable Nano-Field Effect Transistors Combined with Carbon Nanotube Based Print (2008), Grant - NASA GLENN RESEARCH CTR
  Lu, X. (Principal)
• Investigation of Optical Transparent Electrodes (2007), Grant -
  Lu, X. (Principal)
• Developing MIR and LWIR Quantum Dot Infrared Photodectors and Focal Plane Array (2007), Grant -
  Lu, X. (Principal)
• Developing MIR and LWIR Quantum Dot Infrared Photodectors and Focal Plane Array (2007), Grant - Raytheon
  Lu, X. (Principal)
• Developing MIR and LWIR Quantum Dot Infrared Detectors and Focal Plane Array (2007), Grant - Raytheon
  Lu, X. (Co-Principal)
• Development and commercialization of high-speed infrared-transparent transistors on flexible substrates (2007), Grant - NSF
  Lu, X. (Co-Principal)
• LWIR and FIR Infrared Quantum Dot Photodetector with High Sensitivity and Large Field-of-View (2007), Grant - Air Force
  Lu, X. (Co-Principal)
• Investigate transparent conductive electrodes (2007), Sponsored Research - Crystal Research Inc
  Lu, X. (Principal)
• A Long-Wave Infrared Focal Plane Array with Ultra-high Sensitivity and Large Field-of-View (2006), - Air Force
  Lu, X. (Co-Principal)
• Development of LWIR and FIR Infrared Quantum Dot Photodetector with High Quantum Efficiency (2006), Grant - Raytheon
  Lu, X. (Co-Principal)
• A Printable Silicon Nano-Transistor on Flexible Substrate (2006), Grant - NASA
  Lu, X. (Co-Principal)
• A Room-temperature High-speed Quantum Dot Infrared Photodetector with High Photodetectivity (2005), - NASA
  Lu, X. (Co-Principal)
• A High-speed Electr-Optic Phase Compensator for Areo-Optic Applications (2005), Grant - Air Force
  Lu, X. (Co-Principal)
• Integrated Optical Amplifier and/Photodetector Using Quantum Dots for Longwave Infrared Applications (2005), Sponsored Research - Umass Lowell
  Lu, X. (Principal)
• Initial Investigation of the EO Properties of KTN Crystlas (2004), Grant - Crystal Research Inc
  Lu, X. (Principal)
• Development of 32-channel variable optical attenuator (VOA) drivers for phased-array antenna (2004), Sponsored Research - Crystal Research Inc
  Lu, X. (Principal)
• Development of Techniques for On-chip Optical Interconnect Bus (2004), Sponsored Research - Crystal Research Inc
  Lu, X. (Principal)
• Investigation of the Wavelength Tunability of an Optical Etalon Filter (2004), Sponsored Research - PolarOnyx Inc
  Lu, X. (Principal)