학술논문
Variable high-energy-laser attenuator based on the interference on a transparent plate.
Document Type
Article
Author
Source
Subject
*NEUTRAL density filters
*LASERS in physics
*OPTICAL interference
*TRANSPARENCY (Optics)
*STRUCTURAL plates
*FABRY-Perot interferometers
*GAUSSIAN beams
*TEMPERATURE effect
*REFRACTIVE index
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Language
ISSN
0946-2171
Abstract
The transmittance of a transparent plate is theoretically and experimentally investigated, taking into account Fabry-Perot effects due to Fresnel reflections of a Gaussian beam on the boundaries of a plate. On the basis of these theoretical and experimental predictions, we present the application of a variable laser attenuator based on a thin transparent plate and a temperature regulation. Here, the absorption of the laser energy in the plate should be as low as possible, and its transmittance is changed by the interference due to the different thicknesses and refractive indices for the different temperatures of the plate. Therefore, such an attenuator can be used for a broad range of wavelengths and high-energy laser applications. [ABSTRACT FROM AUTHOR]