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Department of Physics

Federici, John F.

Contact Info
Title: Distinguished Professor
Email: john.f.federici@njit.edu
Office: 474 Tiernan, Lab B15 Tiernan
Phone: 973-596-8482
Dept: Physics
Webpage: http://web.njit.edu/~federici

Courses I Teach

Not teaching any courses this semester

Courses Taught


Research Interests

  • Terahertz (THz) Spectroscopy and Imaging
  • Synthetic aperture/interferometric imaging
  • pump/probe ultrafast spectroscopy
  • sensors
  • biophotonics

Cuurent Research

  • Terahertz (THz) imaging and spectroscopy
  • stand-off detection of explosives
  • bio/chem agents, electronic and THz prperties of nanotubes
  • electronic sensors fabricated on flexible substrates such as plastic.

Selected Publications

 

·          John F. Federici, Dale Gary, Robert Barat, Zoi-Helena Michalopoulou, ‘Detection of Explosives by Terahertz Imaging’, Chapter to appear in Counter-Terrorism Detection Techniques of Explosives Jehuda Yinon Ed.
 
·          M Sinyukov, A. Bandyopadhyay, A. Sengupta, R. B Barat, D. E Gary, Z. H. Michalopoulou, D. Zimdars, and J. F Federici, ‘Terahertz interferometric and synthetic aperture imaging, Inter. J. High Speed Electron. Systems. (accepted).
 
·          A. Bandyopadhyay, A. Sengupta, R. B. Barat, D. E. Gary, Z. Michalopoulou, and J. F. Federici,  ´Interferometric THz Imaging for detection of lethal agents using artificial neural network analysis´, Int. J. Infrared Millimeter Waves (accepted).
 
·          A. Bandyopadhyay, , A. Stepanov, A. Sengupta, D. E. Gary, M. D. Federici, B. Schulkin, R. B. Barat, E. Michalopoulou, D. Zimdars, and J. F. Federici, ´Terahertz interferometric and synthetic aperture imaging´, J. Opt. Soc. Amer. A 23, 1168 (2006)
 
·          J. Federici, R. Barat, D. Gary, Z-H. Michalopoulou, and D. Zimdars, ´Stand-Off Sensing of Explosives Using Terahertz Radiation´, (in press)  American Laboratory
 
·          Sengupta, A. Bandyopadhyay, J. F. Federici, D. E. Gary, and R. B. Barat, “THz reflection spectroscopy of Composition C-4 and its detection through interferometric imaging,” Proc. SPIE 6120, 61200A (2006).       
 
·          A. Bandyopadhyay, A. Sengupta, R. B. Barat, D. E. Gary, and  J.F. Federici, “Grain size dependant scattering studies of common materials using THz time-domain techniques,” Proc. SPIE 6120, 61200 2006).
 
·          Bandyopadhyay, A. Sengupta, V. Johnson, J. A. Harrington, and J. F. Federici, “Characterization of hollow polycarbonate waveguides using THz time-domain spectroscopy,” Proc. SPIE 6120, 61200B (2006).
 
·          Sinyukov, A. Bandyopadhyay, A. Sengupta, D. E. Gary, R. B. Barat, E. Michalopoulou, D. Zimdars, and J. F. Federici, ´Terahertz interferometric and synthetic aperture imaging´, Proc. SPIE 6120, 62120Z (2006)
 
·          M Sinyukov, A. Bandyopadhyay, A. Sengupta, R. B Barat, D. E Gary, Z.-H. Michalopoulou, D. Zimdars, and J. F Federici, ‘Terahertz interferometric imaging of a concealed object’, SPIE Optics East, October 2006.
 
·          Sengupta, A. Bandyopadhyay, R. Barat, D. E Gary and J. F Federici, ´THz Reflection Spectroscopy of Composition C-4 and its detection through interferometric imaging´, presented at the Optical Terahertz Science and Technology (OTST) 2005 conference Orlando, FL.
 
·          John F. Federici, Feng Huang, Aparajita Bandyopadhyay, Amartya Sengupta, Dale Gary. Robert Barat, and David Zimdars, ´THz Standoff Detection and Imaging of Explosives and Weapons´, (INVITED PAPER), Proc. SPIE 5781, 75 (2005). John F. Federici, Brian Schulkin, Feng Huang, Dale Gary, Robert Barat, Filipe Oliveira, and David Zimdars, ´THz Imaging and Sensing for Security Applications - Explosives, Weapons, and Drugs´,  Semicond. Sci. Technol. 20 S266-S280 (2005).
 
·          John F. Federici, Feng Huang, Dale Gary, Robert Barat, David Zimdars, ´THz Imaging using an Interferometric Array´, Proc. SPIE 5790, 11 (2005).
·          John. F. Federici, Robert Barat, D. Gary, "THz Imaging System and Method", US Patent 6,815,683 B2, (2004).
 
·          John F. Federici and Dale Gary,  Terahertz Imaging for Near-Field Objects”, US Patent 7105820 (2006).
 
·          F. Huang, B. Schulkin, H. Altan, J. Federici, D. Gary, R. Barat, D. Zimdars, M. Chen and
·          D. Tanner, Terahertz Study of 1,3,5-Trinitro-s-triazine (RDX) by Time Domain Spectroscopy and FTIR´, Appl. Phys. Lett., 85 5535 (2004).
 
·          K. P. Walsh, B. Schulkin, D. Gary, J. F. Federici, R. Barat, D. Zimdars,´Terahertz near-field interferometric and synthetic aperture imaging,´ Proc. SPIE 5411, 9 (2004). 
·          F. Oliveira, R. Barat, B. Schulkin, F. Huang, J. Federici, D. Gary, and D. Zimdars, Analysis of THz Spectral Images of Explosives and Bio-Agents using Trained Neural Networks´, Proc. SPIE 5411, 45 (2004). 
·          Feng Huang, John F. Federici, Robert Barat, Dale Gary, ´Detection of the agent inside or behind a barrier material´, Proc. SPIE Vol. 5584, p. 32-41, 2004 
·          Feng Huang, John F. Federici, Robert Barat, Dale Gary, David Zimdars, ´Optical properties around resonance peaks by THz-TDS´, Proc. SPIE Vol. 5584, p. 23-31, 2004.
 
·          John F. Federici, Dale Gary, Brian Schulkin, Feng Huang, Hakan Altan, Robert Barat, and David Zimdars, "Terahertz imaging using an interferometric array", Appl. Phys. Lett. 83, 2477 (2003).
 
·          Felipe Oliveira, Robert Barat, Brian Schulkin, John F. Federici, Dale Gary, and David A. Zimdars, ´Neural network analysis of terahertz spectra of explosives and bio-agents´, Proc SPIE 5070, 60 (2003).
 
·          Hakan Altan, Feng Huang, John F. Federici, Aidong Lan, and Haim Grebel, ´Characteristics of nanoscale composites by terahertz spectroscopy´, Proc SPIE 5070, 53 (2003).
 
THz Waveguides
 
·          Bandyopadhyay, A. Sengupta, and J. F Federici, V. Johnson and J. A Harrington, ‘Characterization of Hollow Polycarbonate Metal waveguides using Terahertz time domain spectroscopy’, submitted to J. Opt. Soc. America B.
 
·          Bandyopadhyay, A. Sengupta, V. Johnson, J. A Harrington, and John F Federici, ´Characterization of Hollow Polycarbonate Metal waveguides using Terahertz time domain spectroscopy´, SPIE Photonics West, January 2006.
·          THz Technology
 
·          O. Sternberg, K. Stewart, J. Fischer, Y. L. Hor, A. Bandyopadhyay, J. F Federici, M. Bornefeld, Y.-L. Mathis, K.D.Möller and H. Grebel, ‘Square Shaped Metal Screens in the IR to THz Spectral Region: Resonance Wavelengths and Bandpass Filter Characteristics’, submitted to Appl. Optics.
 
·          Sengupta, A. Bandyopadhyay, B. F. Bowden, J.A. Harrington, and J.F. Federici, ‘Characterization of olefin copolymers using terahertz spectroscopy’, submitted to Electron. Lett.
 
·          H. Altan, A. Sengupta, J F Federici, H. Grebel, D. Pham, ´Estimation of Defect Characteristics of HfO2 and SiO2 on p-type silicon wafers using THz spectroscopy´, submitted for publication.
 
·          Feng Huang, John F. Federici, and Dale Gary, ´Determining thickness independently from optical constants by use of ultrafast light´, Opt. Lett. 29, 2435 (2004).
 
Solid State Physics (nanotubes and other)
 
·          H. Altan, F. Huang, J. F. Federici, A. Lan, H. Grebel, “Optical and Electronic Characteristics of Single Walled Carbon Nanotubes and Silicon Nanoclusters by THz Spectroscopy”, J. Appl. Phys. 96, 6685 (2004)
 
·          Hakan Altan, Feng Huang, John F. Federici, Aidong Lan, and Haim Grebel, ´Characteristics of Nano-scale Composite Materials using THz spectroscopy´, Proc. SPIE 5268, p53-60, (2004).
 
·          John Federici and Haim Grebel, “Characterization of nanoscale composites at Thz and IR spectral regions”, Int. J. of High Speed Elec. and Sys., 13, 969-993 (2003)
 
·          J. F. Federici and H. Grebel, "Characteristics of Nano-Scale Composites at THz and IR Spectral Regions", in Sensing Science and Technology at THz Frequencies, Volume II. Emerging Scientific Applications & Novel Device Concepts, ed. D. Woodard, M. Shur, W. Loerop.
 
·          S. Vijayalakshmi, M. George, J. F. Federici, Z. Iqbal and H. Grebel, "Non-linear optical properties of silicon nanoclusters", Thin Solid Films 339, 102-108 (1999).
 
·          P. Saeta, J.F. Federici, B.I. Greene, and D.R. Dykaar, `Intervalley scattering in GaAs and InP probed by far infrared absorption spectroscopy´, Appl. Phys. Lett. 60, 1477, (1992).
·          I. Greene, J. F. Federici, D. R. Dykaar, A. F. J. Levi and L. Pfeiffer, `Picosecond Pump and Probe Spectroscopy Utilizing Freely Propagating Terahertz Radiation´, Opt. Lett. 16, 48 (1991).
 
·          J.F. Federici, B.I. Greene, D.R. Dykaar, F. Sharifi, and R.C. Dynes, `Direct picosecond measurement of photoinduced Cooper pair breaking in lead´, Phys. Rev. B 46, 11153, (1992). Near-field Microscopy, THz sources and Detectors
·          J. F. Federici and O. Mitrofanov, "Near Field THz Microscopy", Physics in Medicine & Biology, 47 3727-3734 (2002).
 
·          O. Mitrofanov, M. Lee, J. W. P. Hsu, I. Brener, R. Harel, J. Federici, J. D. Wynn, L. N. Pfeiffer, and K. W. West, ´Collection mode near-field imaging with 0.5 THz pulses´, IEEE Journal of Selected Topics in Quantum Electronics 7, 600 (2001).
 
·          O. Mitrofanov, M. Lee, J. W. P. Hsu, L. N. Pfeiffer, K. W. West, J. D. Wynn, J. F. Federici, ´Terahertz Pulse Propagation through Small Apertures´, Appl. Phys. Lett. 79, 907 (2001).  
·          O. Mitrofanov, R. Harel, M. Lee, L. N. Pfeiffer, K. West, J. D. Wynn, J. Federici, "Study of the Single-Cycle Pulse Propagation inside the Near-Field Probe´, Appl. Phys. Lett. 78, 252 (2001).
 
·          O. Mitrofanov, I Brener, R. Harel, J. D. Wynn, M. Lee, J. Federici, "Far-Infared Near Field Microscopy based on a Collection Mode detector", Appl. Phys. Lett. 77, 3496 (2000).
 
·          O. Mitrofanov, I. Brener, M. C. Wanke, R. R. Ruel, J. D. Wynn, A. J. Bruce, J. Federici, "Near-Field microscope probe for far infrared time domain measurements," Applied Physics Letters 77, 591 (2000).
 
·          Y. Cai, I. Brener, J. Lopata, J. Wynn, L. Pfeiffer, J. B. Stark, Q. Wu, X. C. Zhang, and J.
 
·          F. Federici, "Coherent Terahertz Radiation Detection: Direct Comparison Between Free-Space Electro-optic Sampling and Antenna Detection", Appl. Phys. Lett. 73, 444 (1998).
 
·          Y. Cai, I. Brener, J. Lopata, J. Wynn, L. Pfeiffer and J. Federici, `Singular Electric Field Terahertz Emitters and Detectors’ in Trends in Optics and Photonics Series 13, 237 (1997).
 
·          Y. Cai, I. Brener, J. Lopata, J. Wynn, L. Pfeiffer, and J. Federici, `Design and performance of singular electric field terahertz photoconducting antennas,´ Appl. Phys. Lett. 71, 2076 (1997).
·          R. Dykaar, B. I. Greene, J. F. Federici, A. F. J. Levi, L. Pfeiffer and R. Kopf, `Log-Periodic Antennas for Pulsed Terahertz Radiation´, Appl. Phys. Lett. 59, 262 (1991).
 
·          B.I. Greene, J.F. Federici, D.R. Dykaar, R.R. Jones, and P.H. Bucksbaum, `Interferometric characterization of 160 fs far-infrared light pulses´, Appl. Phys. Lett. 59, 893, (1991).
 
Bio-optics and Medical Imaging
 
·          The purpose of this work is to develope a non-invasive, in-situ imaging technique for measuring the stretch/ strain of biological and non-biological soft-tissues such as skin. In particular, the polarization imaging technique is a promising imaging method for measuring the biomechanical properties of soft-tissues. The following papers describe the technique and our results to date.
 
·          N. Guzelsu, J. F. Federici, H. C. Lim, H. R.Chauhdry, A. B.Ritterand T. Findley, "Measurement of Skin Stretch via Light Reflection", J. Biomedical Optics. 8, 80 (2003).
 
·          Schulkin, H. C. Lim, N. Guzelsu, G. Jannuzzi, and J. F. Federici, "Polarized Light Reflection from Strained Sinusiodal Surface", Applied Optics-OT 42, 5198 (2003).J. F. Federici and O. Mitrofanov, `Terahertz Near-Field Imaging´, Physics in Medicine and Biology 47 3727-3734 (2002).
 
·          N.Guzelsu, T.W. Findley, J. F. Federici, H.R.Chaudhry and A.B.Ritter " Apparatus and Method for Non-Invasive Measurement of Stretch," U.S.Patent 6,324,419 B1, November 27, 2001.
 
·          J. F. Federici, H. C. Lim, G. Jannuzzi, N. Guzelsu, T. Findley, A. Ritter, H. Chaudhry, "Non-Invasive Light Reflection Technique for Measuring Soft-Tissue Stretch" - Applied Optics 38, 6653 (1999)
 
Macroelectronics
 
·          This work has focused mostly on characterization and device applications of large area electronic circuits which are fabricated on flexible substrates such as plastic. This work is funded by a NJ Commission of Science and Technology grant which supports the NJ Center for Macroelectronics (NJIT and Princeton University collaboration).
 
·          H. C. Lim, B. J. Shulkin, M. J. Pulikal, S. Liu
·          1, R. Petrova, G. Thomas, S. Wagner,K. Sidhu, and J. F. Federici, "Flexible membrane pressure sensor", Sensors and Actuators A (Physical), 119, 332-5 (2005).
 
·          Photoinduced Superconductivity
 
·          This work has focussed mostly on understanding the physical mechanism of photoinduced superconductivity in YBa2Cu3O6+x. We have conducted photoconductivity, IR quenching, photoluminescence, and x-ray studies which suggest that a defect mediated mechanism is an appropriate description. The following papers describe the results:
 
·          M. Bubb and J. F. Federici, Cellular Automata Model for Persistent Photoconductivity in YBCO, J. Physics - Condensed Matter 12, L261 (2000).
 
·          Chew, J. F. Federici, J. Gutierrez-Solana, G. Molina, W. Savin, and W. Wilber, `Infrared quenching of photoinduced persistent conductivity in YBa2Cu3O6+x´, Appl. Phys. Lett. 69, 3260 (1996).
·          J. F. Federici, D. Chew, B. Welker, J. Gutierrez-Solana, W. Savin, T. Fink, and W. Wilber, `Defect mechanism of photoinduced superconductivity in YBCO´, Phys. Rev. B 52, 15592 (1995).
 
·          T. Tyson, J. F. Federici, D. Chew, A. R. Bishop, L. Furenlid, W. Savin, and W. Wilber, `Observation of local structural and electrical changes accompanying photodoping in YBa2Cu3O6+x,´ Physica C 292, 163 (1997).
·          M. Bubb, J. F. Federici, W. Wilber, S. Tidrow, J. Kim, and A. Pique. "Wavelength and Photon Dose Dependence of Infrared Quenched Persistent Photoconductivity in YBa2Cu3O6+d ," Phys. Rev. B 60, 6827, 1999.J. F. Federici and D. M. Bubb, "The Role of Defects in Persistent Photoconductivity", J. Superconductivity14, 331 (2001).
 
Other Solid State Physics
 
·          A. Thomas, D. M. Bubb, T. Y. Koo, D. J. Werder, S. W. Cheong, and J. F. Federici, `Lighting Up Erbium with Water: Observation of Crystalline Matrix Element Enhancements´, J. Applied Physics 90, (2001).
 
Integrated Optical Sensors
 
·          H. Luo, R. A. Levy, Y. F. Hor, J. F.Federici, and R. M. Pafchek, ´An Integrated Photonic Sensor for In-situ Monitoring of Hazardous Organics´, Sensors and Actuators B 92, 121 (2003).
 
Photonics Education
 
·          J. F. Federici, "Optical Science and Engineering Research and Education at NJIT", Presented at the SPIE EAST 2004 Conference, Photonics Programs in Regional Universities Forum. Wednesday 27 October.
 
·          Schulkin, L. Sztancsik, J. F. Federici, "Analytic Solution for 1 Dimension Photonic Band Gap Crystals", Amer. J. Phys. 72, 1 (2004).