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.
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.
Paul S. Hsu, George R. Welch, James R. Gord, and Anil K. Patnaik. “Propagation dynamics of controlled cross-talk via interplay between \(\chi\)(1) and \(\chi\)(3) processes.” Phys. Rev. A, 83(5), 053819, May 2011.
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.
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.
Chun-ho Iu, George R. Welch, Michael M. Kash, Daniel Kleppner, D. Delande, and J. C. Gay. “Diamagnetic Rydberg atom: Confrontation of calculated and observed spectra.” Phys. Rev. Lett., 66(2), 145--148, Jan 1991.