Document Type

Article

Publication Date

1-1-1998

Abstract

We consider high harmonic generation by ultrashort (27–108 fs) laser pulses and calculate the macroscopic response of a collection of atoms to such a short pulse. We show how the harmonic spectrum after propagation through the medium is significantly different from the single-atom spectrum. We use single-atom data calculated by integration of the time-dependent Schrödinger equation and propose a method, based on an adiabatic approximation, to extract the data necessary to perform a propagation calculation. © 1998 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review A - Atomic, Molecular, and Optical Physics

First Page

4553

Last Page

4560

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