A numerical study of coherent laser pulse evolution in CO2 in the framework of the Maxwell–Schrödinger equations up to the intensity 1013 W/cm2 is presented. The model includes various nonresonant vibrational–rotational transitions usually neglected in low-intensity simulations. Level degeneracy is taken into account, and light-polarization effects are discussed. The limiting intensities up to which various models work are established.
© 1990 Optical Society of America
Original Manuscript: October 3, 1988
Manuscript Accepted: September 5, 1989
Published: January 1, 1990
S. Chelkowski and A. D. Bandrauk, "Multilevel nonlinear effects in the amplification of ultrashort laser pulses in CO2," J. Opt. Soc. Am. B 7, 90-100 (1990)