Abstract: We have fabricated CVD diamond windows with transmission of 71.1% at a wavelength of 10 $mu@m. Raman spectra of such windows show no evidence of any luminescence or sp$+2$/ bonding and are quite similar to the spectra to that of type IIa natural diamonds. Hydrogen content of 20 ppm atomic has been determined by quantitative FTIR analysis. The thermal conductivity of this grade of diamond can be as high as 15 W/cm K, as measured by the converging thermal wave technique. We have measured bulk, shear, and Young's modulus and determined Poisson's ratio for optical grade diamond. RF dielectric constant and loss tangent measurements for lower grade diamond yielded 5.6 for the dielectric constant and 6 $MUL 10$+$MIN@3$/ for the loss tangent.!4
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机译：摘要：我们制造了在波长为10μm的情况下具有71.1％的透射率的CVD金刚石窗口。这种窗口的拉曼光谱没有显示任何发光或sp $ + 2 $ /键的迹象，并且与IIa型天然钻石的光谱非常相似。通过定量FTIR分析确定了20 ppm原子的氢含量。用会聚热波技术测得，该等级金刚石的导热率可高达15 W / cmK。我们已经测量了光学级金刚石的体积，剪切和杨氏模量，并确定了泊松比。较低品级钻石的RF介电常数和损耗角正切测量得出介电常数为5.6，损耗角正切为6 $ MUL 10 $ + $ MIN @ 3 $ /！4
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