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2 November 2016 Diamond drumhead crystals (Conference Presentation)
Tomasz Kolodziej, Preeti Vodnala, Sergey A. Terentyev, Vladimir D. Blank, Yuri V. Shvyd'ko
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Proceedings Volume 9963, Advances in X-Ray/EUV Optics and Components XI; 99630C (2016) https://doi.org/10.1117/12.2238013
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States
Abstract
Ultra-thin (< 100 um) diamond single crystals are essential for the realization of numerous next generation x-ray optical devices. Fabrication and handling of such ultra-thin crystal components without introducing damage and strain is a challenge. Drumhead crystals, monolithic crystal structures comprised of a thin membrane furnished with a surrounding solid collar would be a solution for the proper handling ensuring mechanically stable and strain-free mount of the membranes with efficient thermal transport. However, diamond being one of the hardest and chemically inert materials poses insurmountable difficulties in the fabrication. Here we report on a successful manufacturing of the diamond drumhead crystals using picosecond laser milling. Subsequent temperature treatment appears to be crucial for the membranes to become defect-free and unstrained, as revealed by x-ray double-crystal topography on an example of drumhead crystals with 1-mm in diameter and 28 um to 47 um-thick membranes in the (100) orientation.
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Tomasz Kolodziej, Preeti Vodnala, Sergey A. Terentyev, Vladimir D. Blank, and Yuri V. Shvyd'ko "Diamond drumhead crystals (Conference Presentation)", Proc. SPIE 9963, Advances in X-Ray/EUV Optics and Components XI, 99630C (2 November 2016); https://doi.org/10.1117/12.2238013
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KEYWORDS
Crystals
Diamond
X-rays
X-ray optics
Laser crystals
Manufacturing
Optical components
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