Half-tone images in laser image projection using saturated laser Fourier-amplifiers

Half-tone images in laser image projection using saturated laser Fourier-amplifiers

A contradiction between high efficiency of an amplifier operating in a saturated mode, and nonlinear distortions in image reproduction characteristic for this regime is solved. A lasing medium is located in a Fourier-plane of the image, its gain profile being specially shaped, while the amplified im...

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Hauptverfasser: Kornev, A.F., Kuchma, I.G., Pokrovski, V.P., Soms, L.N.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Laser beams
Laser modes
Laser noise
Laser theory
Layout
Lenses
Nonlinear optics
Optical amplifiers
Optical modulation
Optical saturation
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creator Kornev, A.F.
Kuchma, I.G.
Pokrovski, V.P.
Soms, L.N.
description A contradiction between high efficiency of an amplifier operating in a saturated mode, and nonlinear distortions in image reproduction characteristic for this regime is solved. A lasing medium is located in a Fourier-plane of the image, its gain profile being specially shaped, while the amplified image is illuminated by a laser beam which angular divergence is appropriately formed. Criteria for the gain shape and beam divergence are formulated. A possibility for correct amplification of binary and/or half-tone images with high efficiency of energy stored in the laser medium (up to 70%) is shown. The results arc applicable for laser image projectors of systems of virtual reality, simulators, etc., providing images with high dynamic range (e.g., pictures of illuminated landing stripes, approaching car lights, etc.).
doi_str_mv 10.1109/CAOL.2005.1553861
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subjects Laser beams
Laser modes
Laser noise
Laser theory
Layout
Lenses
Nonlinear optics
Optical amplifiers
Optical modulation
Optical saturation
title Half-tone images in laser image projection using saturated laser Fourier-amplifiers
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