Time Resolved Efficiency Degradation in Potassium Diode Pumped Alkali Laser

Abstract

This paper presents results of our study of the performance of a Potassium DPAL operating in pulsed mode with pulses up to 5 msec long at different pulse energies and cell temperatures. The experiments showed the DPAL efficiency degradation in time with a characteristic time in the range from 0.5 msec to 4.5 msec. The recorded spectrum of the side fluorescence indicates that multi-photon excitation, energy pooling collisions and ionization may be strong candidates for explaining the observed performance degradation.

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Document Details

Document Type
Technical Report
Publication Date
Aug 07, 2014
Accession Number
AD1015390

Entities

People

  • Boris V. Zhdanov
  • Matthew D. Rotondaro
  • Michael K. Shaffer
  • Randall J. Knize

Organizations

  • United States Air Force Academy

Tags

DTIC Thesaurus Topics

  • Continuous Waves
  • Degradation
  • Efficiency
  • Energy
  • Fluorescence
  • Gas Lasers
  • High Pressure
  • High Temperature
  • Ionization
  • Laser Diodes
  • Laser Mediums
  • Laser Pumping
  • Laser Resonators
  • Lasers
  • Optics
  • Pumping
  • Pumps

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers