Title :
The role of the Kramers-Henneberger atom in the higher-order Kerr effect
Author :
Patchkovskii, S. ; Richter, Maximilian ; Morales, F. ; Smirnova, O. ; Ivanov, Maxim
Author_Institution :
Steacie Inst. for Mol. Sci., Nat. Res. Council of Canada, Ottawa, ON, Canada
Abstract :
We present a generalized model for the intensity dependent response of atoms in strong IR laser fields, describing deviations in the nonlinear response at the frequency of the driving field from the standard model (linear Kerr effect + plasma defocusing) based on the formation of the stable KH states. According to our numerical simulations, shaping the driving laser pulse allows one to reveal a prominent resonance structure in the Kerr response of an individual atom, which can only be explained by population transfer into excited KH states.
Keywords :
atom-photon collisions; excited states; frequency response; numerical analysis; optical Kerr effect; photoelectron spectra; photoionisation; Kramers-Henneberger atom; angle resolved photoelectron spectra; excited states; higher-order Kerr effect; intensity dependent response; nonlinear frequency response; numerical simulations; population transfer; stable laser-dressed atoms; ultrashort IR femtosecond laser pulses; Atom lasers; Atomic beams; Atomic clocks; Laser excitation; Laser modes; Numerical models;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6801163
