Degenerate Four-Wave Mixing Measurements of High Order Nonlinearities in Semiconductors

Abstract

We describe degenerate four-wave mixing experiments on ZnSe and CdTe semiconductor samples with picosecond laser pulses at wavelengths below the bandgap. Nonlinearities of third, fifth, and seventh order are observed and the mechanisms for each are identified. In all of our measurements, we observe a fast third order nonlinearity. For two-photon absorbers, this is attributed to contributions from both the real (refractive) and imaginary (absorptive) parts of the third-order susceptibility. Below the two-photon absorption edge, the nonlinearity is purely refractive. The higher order effects are due to carriers generated by multiphoton excitation.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA636876

Entities

People

  • D. J. Hagan
  • E. J. Canto-said
  • Eric W. Van Stryland
  • John Young

Organizations

  • University of Central Florida

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Coefficients
  • Diffraction
  • Diffusion Coefficient
  • Electro-Optics
  • Electronics
  • Laser Pulses
  • Materials
  • Optical Phenomena
  • Optical Properties
  • Optics
  • Quantum Electronics
  • Refractive Index
  • Semiconductors
  • Two Photon Absorption
  • Wave Mixing
  • Waveplates

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Materials Science and Engineering.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics