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Vacuum–ultraviolet blazed silicon grating anisotropically etched by native-oxide mask

机译:天然氧化物掩模各向异性刻蚀真空-紫外闪耀硅栅

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We describe a simple and convenient method of controlling the profile of a blazed grating that consists ofnusing a patterned native-oxide layer of off-cut silicon (111) wafers as the mask of anisotropic etching to maxi-nmize the smooth blaze facets of the desired blaze angle and to minimize the deficiencies of the groove apexes.nWith the blazed-grating profile well controlled by this technique, a 1200 g/mm blazed grating was fabri-ncated that had a blaze angle of 5.0° and smooth blaze facets of about 0.2 nm rms. It was measured to havenblaze efficiency in the vacuum–ultraviolet wavelength region. © 2009 Optical Society of America
机译:我们描述了一种简单而方便的方法来控制闪耀光栅的轮廓,该方法包括使用非切割硅(111)晶片的图案化本机氧化物层作为各向异性蚀刻的掩模,以最大程度地实现所需的光滑闪耀面n通过该技术很好地控制了闪耀光栅轮廓,制造了1200 g / mm的闪耀光栅,其闪耀角为5.0°,光滑的闪耀面约为0.2均方根值据测量,它在真空-紫外线波长范围内具有很高的效率。 ©2009美国眼镜学会

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