Larry Carr


Larry Carr is the Group Leader for Low Energy Spectroscopy and manages infrared beamlines U4IR & U12IR that primarily serve the condensed matter physics community. He also works on infrared beamline instrumentation and technique development for both the existing NSLS and future NSLS-II facilities. His current research interests include non-equilibrium dynamics in superconductors and semiconductors studied by time-resolved spectroscopy & magnetospectroscopy, plus the development and application of intense coherent THz pulse sources.

Professional Activities

Phone: 344-2237
Fax: 631-344-3238


  • Ph.D. 1982: Physics (Solid State), The Ohio State University
  • B.S. 1976: Physics, Rensselaer Polytechnic Institute


  • New accelerator-based sources of high-intensity coherent THz pulses
  • Time-resolved spectroscopy of superconductors, semiconductors and nanomaterials
  • Far-infrared properties of superconductors, and disordered / complex materials
  • Synchrotron infrared beamlines and instrumentation
  • Infrared microspectroscopy technique development

Key Publications

  • X Xi, G Carr, A THz time-domain Susceptibility for Superconductors Including Strong-Current Effects, Supercond. Sci. Tech., 26(11), 114001 (2013).
  • E Stavitski, R Smith, M Bourassa, A Acerbo, G Carr, L Miller, Dynamic Full-Field Infrared Imaging with Multiple Synchrotron Beams, Anal. Chem., 85(7), 3599-3605 (2013).
  • Y Shen, T Watanabe, D Arena, C Kao, J Murphy, T Tsang, X Wang, G Carr, Nonlinear Cross-Phase Modulation with Intense Single-Cycle Terahertz Pulses, Phys. Rev. Lett., 99, 043901 (2007).
  • G Carr, S Kramer, J Murphy, R Lobo, D Tanner, Observation of Coherent Synchrotron Radiation from the NSLS VUV Ring, Nucl. Instrum. Meth. A, 463(1-2), 387-392 (2001).
  • G Carr, Resolution limits for infrared microspectroscopy explored with synchrotron radiation, Rev. Sci. Instrum., 72, 1613 (2001).

All Publications