Efficient Second Harmonic Conversion of Broadband High-Peak-Power Nd:Glass Laser Radiation Using Large-Aperture KDP Crystals in Quadrature

Abstract

The second harmonic conversion efficiency broadband Nd: glass Laser Light (Delta nu/c < 30/cm FWHM). Using two KDP crystals in a quadrature arrangement we obtained energy conversion efficiencies 55% with an initial bandwidth for the fundamental of Delta nu/c about 17 cm FWHM. For these conditions, we observed a modest increase (about 70%) in the harmonic bandwidth (FWHM) relative to the fundamental. The usual theory of three wave mixing a dispersive birefringent nonlinear crystals is extended to described the broadband harmonic conversion process; the generalized theory includes the statistical properties of the Light and phase mismatch effects on the spectral components in the complex field amplitudes. Good agreement is shown between the code calculations and the measurements. Keywords: Full width at half maximum.

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Document Details

Document Type
Technical Report
Publication Date
Jun 23, 1989
Accession Number
ADA209452

Entities

People

  • C. K. Manka
  • C. Pawley
  • M. S. Pronko
  • R. Eckardt
  • R. H. Lehmberg
  • Stephen P.P. Obenschain

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Autocorrelation
  • Classification
  • Energy Conversion
  • Frequency
  • Glass Lasers
  • Group Velocity
  • Measurement
  • Numbers
  • Optical Materials
  • Optics
  • Peak Power
  • Physics
  • Polarization
  • Power Spectra
  • Radiation
  • Simulations
  • Wave Mixing

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers