Proceedings ArticleDOI
Laser Wavefront Analyzer For Diagnosing High-Energy Lasers
John Van Workum,James A. PIascyk,Michael L. Skolnick +2 more
- Vol. 0141, pp 58-66
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TLDR
The Laser Wavefront Analyzer (LWA) as discussed by the authors is a sliding reference interferometer that measures differential optical phase over a 32 × 32 element format of the input beam and a resolution element is scanned every 10 µsec.Abstract:
The Laser Wavefront. Analyzer (LWA) determines the intensity and phase of a CO2 laser operating over a spectral range from 9.1 µm to 10.7 µm. The LWA is a sliding reference interferometer and measures differential optical phase over a 32 x 32 element format of the input beam. A resolution element is scanned every 10 µsec. The theory and general design aspects of the LWA are discussed in this paper. Phase and intensity data outputs obtained with the instrument during calibration tests performed by the Air Force Weapons Laboratory at Kirtland Air Force Base are presented. This calibration data was obtained by utilizing low power CO2 gas lasers with appropriate optical components to magnify and alter the phase front of the beam entering the analyzer sensor aperture. Phase accuracy and precision data from these calibration tests are also presented.read more
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Proceedings ArticleDOI
High Energy Laser Diagnostics - A Review
F. H. White,G. A. Needham +1 more
TL;DR: In this paper, a variety of component/subsystem diagnostics are reviewed for the gain generator, optical resonator, diffuser/ejector and fluid supply subsystems.
Proceedings ArticleDOI
Low-Absorption Grating Beam Samplers
Jayanta K. Guha,James A. Plascyk +1 more
TL;DR: In this paper, a development program involving the design, fabrication and testing of low-efficiency, low-absorption grating beam samplers is described, and two basic designs were selected for development.
Proceedings ArticleDOI
Laser Amplifier Gain Mapping
TL;DR: The Laser Wavefront Analyzer at the Air Force Weapon Laboratory records a 32 × 32 array of intensity and phase information for a 10 cm square input aperture at a rate of 100 frames per second as mentioned in this paper.
Low- absorption grating beam samplers
TL;DR: In this article, a development program involving the design, fabrication and testing of low-efficiency, low-absorption grating beam samplers is described, and the fabrication problems associated with each type of beam sampler are discussed.
References
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Journal ArticleDOI
Method for Evaluating Lateral Shearing Interferograms
TL;DR: A method is described that uses data obtained from two lateral shear interferograms sheared in orthogonal directions to describe a wavefront of any arbitrary shape using a least squares criterion to match the measured data to the reconstructed shear data.