Laser Projection System with Potassium Gadolinium Tungstate
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Mar 31, 2014
filing date -
Mar 31, 2014
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Abstract
An apparatus and method for enhancing light using stimulated Raman scattering in a potassium gadolinium tungstate (KGW) crystal. The stimulated Raman scattering is utilized to add wavelength diversity for reduced speckle and to change the color of the light to a more desirable combination of wavelengths. Digital projection is one application that may benefit from lower speckle and shifted color. Color-based stereoscopic projection is enabled by the addition of stimulated Raman bands at specific wavelengths.
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