The Study of the Interaction of Intense Picosecond Light Pulse with Materials: Multi-photon Conductivity in Semiconductors and Measurement of Picosecond Pulse Width

Abstract

The two-photon conductivity in GaAs and CdS(0.5) - Se(0.5) and the three-photon conductivity in CdS were investigated with the use of Mode-locked Nd:glass laser as the exciting source. The square law dependence of the two- photon conductivity and the cubic law dependence of the three-photon conductivity on the excitation intensity were subsequently used to measure the autocorrelation of the intensity in second and third order of the picosecond pulses from the mode-locked Nd:glass laser. The absorption coefficients estimated from the photoconductivity measurement were found to agree in order of magnitude with the theoretically calculated values from time dependent perturbation theory and the band structure of the semiconductor.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1973
Accession Number
AD0760560

Entities

People

  • Chihhi Lee
  • Subramania Jayaraman

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Band Gaps
  • Band Structures
  • Charge Carriers
  • Electrical Engineering
  • Electromagnetic Fields
  • Electronics Laboratories
  • Energy Bands
  • Energy Gaps
  • Glass Lasers
  • Insensitive Explosives
  • Laser Beams
  • Laser Pulses
  • Lasers
  • Light (Electromagnetic Radiation)
  • Light Pulses
  • Semiconductors

Fields of Study

  • Materials science
  • Physics

Readers

  • Approximation Theory.
  • Optical Physics and Photonics.
  • Semiconductor Device Technology

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics