Preparation of constant-bandwidth total inversion, independent of optical density, with phase-modulated laser pulses


Journal Article

We show that pulses of electromagnetic radiation with a hyperbolic-secant envelope and a hyperbolic-tangent frequency sweep are capable of exciting an inversion line shape in a collection of two-level absorbers that is highly insensitive to optical density. This is not true of the hyperbolic-secant pulse (with no frequency modulation) which undergoes significant reshaping as it propagates. The analysis is based on numerical solutions of the coupled Maxwell-Bloch equations in both the plane-wave and paraxial approximations. We also show an additional insensitivity of the inversion profile to finite relaxation times (T2) that approach the pulse width. © 1988 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Spano, FC; Warren, WS

Published Date

  • January 1, 1988

Published In

Volume / Issue

  • 37 / 3

Start / End Page

  • 1013 - 1016

International Standard Serial Number (ISSN)

  • 1050-2947

Digital Object Identifier (DOI)

  • 10.1103/PhysRevA.37.1013

Citation Source

  • Scopus