Analysis of Modes in an Unstable Strip Laser Resonator.

Abstract

The mode eigenvalue equation for an unstable strip laser resonator is developed from scalar diffraction theory. The field distributions are expressed as a series and the integral is then evaluated using a first order approximation to the method of stationary phase. The resulting approximate closed form is rearranged to form an eingenvalue polynomial, the roots of which are the mode eigenvalues. Eigenfunction expressions are then developed using second order approximation to the method of stationary phase. Modifications to these expressions are then made to account for the presence of uniform gain in the resonator. The results of a computer program using the derived expressions are presented. Comparisons to previously published results are made for the bare cavity case, and results for the loaded cavity case follow. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1980
Accession Number
ADA094722

Entities

People

  • James E. Rowley

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Complex Variables
  • Computer Programs
  • Computers
  • Diffraction
  • Eigenvalues
  • Eigenvectors
  • Equations
  • Integral Equations
  • Integrals
  • Laser Resonators
  • Lasers
  • Plastic Explosives
  • Polynomials
  • Resonators
  • Stationary
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Microwave Engineering.

Technology Areas

  • Directed Energy