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Proceedings Paper

Optical Performance Predictions for High-Energy Laser Systems
Author(s): Richard Wade; Robert Acebal; Jad Batteh; Jerry Long; Wilford Smith
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Paper Abstract

In this paper, we describe a wave optics model we have developed for predicting the performance of high-energy laser systems, with particular emphasis on its application to the cylindrical, source-flow HF chemical laser. The structure of the code is based on the 'lumped equivalent optical train' concept, in which any continuous spatial effect on the optical field, such as mirrors, apertures, and gain medium, is approximated numerically by a finite number of transfer functions on the field. Free space propagation between elements is achieved by using Fast Fourier Transforms. The gain is modeled as a series of gain sheets, where the spatial dependence of the gain is calculated from a detailed aerokinetic treatment of the interaction of the intensity field with the flow in the laser cavity. Resonator calculations will be described for two different gain models. In the rotational nonequilibrium (RNE) model, the effects of disequilibrium in the rotational distribution of the individual vibrational levels are accounted for explicitly by solving an evolution equation for each vibro-rotational state of the lasing molecule. The second gain model, referred to as the single line (SL) model, is based on two assumptions, namely that the rotational levels in each vibrational level are in thermal equilibrium, and that the gain on the lasing lines is identical.

Paper Details

Date Published: 25 November 1986
PDF: 9 pages
Proc. SPIE 0642, Modeling and Simulation of Optoelectronic Systems, (25 November 1986); doi: 10.1117/12.975497
Show Author Affiliations
Richard Wade, Science Applications International Corporation (United States)
Robert Acebal, Science Applications International Corporation (United States)
Jad Batteh, Science Applications International Corporation (United States)
Jerry Long, Science Applications International Corporation (United States)
Wilford Smith, Science Applications International Corporation (United States)


Published in SPIE Proceedings Vol. 0642:
Modeling and Simulation of Optoelectronic Systems
John Dugan O'Keefe, Editor(s)

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