Relief grating induced by photo-expansion in Ga-Ge-S and Ga-Ge-As-S glasses
作者： Sandra Helena Messaddeq , M Siu Li , D Lezal , Younnes Messaddeq , C Republic
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摘要: We report the fabrication of relief diffraction gratings recorded on a surface photosensitive Ga10Ge25S65 and Ga5Ge25As5S65 glasses by means interference two UV laser beams at 351 nm. The efficiency ( ) first order was measured. Atomic-forcemicroscope (AFM) used to perform 3D imaging analysis sample topography that shows superposition an imprinted grating over glass. change in absorption edge refractive index has been evaluated structural approach glass discussed.
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