Theory of Optical Coherent Transients Including Collisional Effects: Application to an Extended-Pulse Photon Echo

Abstract

The interaction between an intense radiation field and atoms that undergo collisions in an atomic vapor is studied. With the assumption that velocity-changing collisions are state independent and weak, one obtains analytic expression for the time-dependent density-matrix elements by solving a quantum-mechanical transport equation using a dressed-state approach. Our analytical calculation is used to predict the form of the signal in an extended- pulse photon echo. The results show good agreement with an experiment carried out by Yodh et al. It is found that the decay rate of the echo signal decreases rapidly with increasing duration of the second pulse in the pulse excitation sequence. A comparison between theory and experiment is presented and a physical interpretation of the results is given. Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Jun 15, 1989
Accession Number
ADA213108

Entities

People

  • P. R. Berman
  • Ru-wang Sung

Organizations

  • New York University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Agreements
  • Amplitude
  • Atoms
  • Boltzmann Equation
  • Collisions
  • Emission
  • Equations
  • Excitation
  • Experimental Data
  • Field Conditions
  • Integrals
  • Intensity
  • New York
  • Phase Shift
  • Physical Properties
  • Stochastic Processes
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Dots