High Harmonic Generation at Long Wavelengths

B. Sheehy; J. D. D. Martin; L. F. DiMauro; P. Agostini; K. J. Schafer; M. B. Gaarde; K. C. Kulander

doi:10.1103/PhysRevLett.83.5270

High Harmonic Generation at Long Wavelengths

B. Sheehy, J. D. D. Martin, L. F. DiMauro, P. Agostini, K. J. Schafer, M. B. Gaarde, and K. C. Kulander

Phys. Rev. Lett. 83, 5270 – Published 20 December 1999

Abstract

High harmonic radiation spectra up to 19th order in alkali metal vapors excited by an intense, picosecond mid-infrared ( $3 - 4 μ m$ ) laser are reported and compared to theory. The strong-field dynamics in the alkali metal atoms exhibit significant differences from all previously studied systems due to the strong coupling between their ground and first excited states.

Received 23 July 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.5270

Authors & Affiliations

B. Sheehy¹, J. D. D. Martin¹, L. F. DiMauro¹, P. Agostini², K. J. Schafer³, M. B. Gaarde^3,4, and K. C. Kulander⁵

¹Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973
²SPAM, Centre d'Etudes de Saclay, 91191 Gif Sur Yvette, France
³Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001
⁴Department of Physics, Lund Institute of Technology, P.O. Box 118, S-22100 Lund, Sweden
⁵TAMP, Lawrence Livermore National Laboratory, Livermore, California 94551