George Welch headshot
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George Welch

Faculty: Professor


MPHY 314 (main office)


George Welch conducts research in quantum optics and atomic and molecular physics involving coherently prepared systems, electro-magnetically induced transparency (EIT) and slow and fast light, femtosecond molecular spectroscopy including coherent anti-Stokes Raman scattering, and use of cold atoms for rotation sensing.

Selected Publications

M. P. Manicchia, J. Lee, G. R. Welch, J. Mimih, and F. A. Narducci. “Construction and characterization of a continuous atom beam interferometer.” Journal of Modern Optics, N/A, 1--11, Nov 2019.

Aihua Zhang, Vladimir A Sautenkov, Yuri V Rostovtsev, and George R Welch. “Observation of coherent effects using a mode-locked rubidium laser.” Journal of Physics B: Atomic, Molecular and Optical Physics, 50(3), 035503, Jan 2017.

Dmitri V. Voronine, Alexander M. Sinyukov, Xia Hua, Kai Wang, Pankaj K. Jha, Elango Munusamy, Steven E. Wheeler, George Welch, Alexei V. Sokolov, and Marlan O. Scully. “Time-Resolved Surface-Enhanced Coherent Sensing of Nanoscale Molecular Complexes.” Scientific Reports, 2(1), Nov 2012.

Paul S. Hsu, Anil K. Patnaik, and George R. Welch. “Controlled parametric generation in a double-ladder system via all-resonant four-wave mixing.” Optics Letters, 33(4), 381, Feb 2008.

Eugeniy E. Mikhailov, Vladimir A. Sautenkov, Irina Novikova, and George R. Welch. “Large negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas.” Phys. Rev. A, 69(6), 063808, Jun 2004.

A. B. Matsko, I. Novikova, M. S. Zubairy, and G. R. Welch. “Nonlinear magneto-optical rotation of elliptically polarized light.” Phys. Rev. A, 67(4), 043805, Apr 2003.

I. Novikova and G. R. Welch. “Magnetometry in dense coherent media.” Journal of Modern Optics, 49(3-4), 349--358, Mar 2002.

A. B. Matsko, I. Novikova, and G. R. Welch. “Radiation trapping under conditions of electromagnetically induced transparency.” Journal of Modern Optics, 49(3-4), 367--378, Mar 2002.

Michael M. Kash, Vladimir A. Sautenkov, Alexander S. Zibrov, L. Hollberg, George R. Welch, Mikhail D. Lukin, Yuri Rostovtsev, Edward S. Fry, and Marlan O. Scully. “Ultraslow Group Velocity and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas.” Phys. Rev. Lett., 82(26), 5229--5232, Jun 1999.

G. G. Padmabandu, George R. Welch, Ivan N. Shubin, Edward S. Fry, Dmitri E. Nikonov, Mikhail D. Lukin, and Marlan O. Scully. “Laser Oscillation without Population Inversion in a Sodium Atomic Beam.” Phys. Rev. Lett., 76(12), 2053--2056, Mar 1996.