发明名称 |
Synthetic diamond optical elements |
摘要 |
An optical element 10 is made of synthetic diamond material and has an anti-reflective surface pattern 16 formed directly in at least one surface. The optical element has an absorption coefficient measured at room temperature of ≤ 0.5 cm-1 at a wavelength of 10.6 µm. It has a reflectance at said at least one surface of no more than 2% at an operating wavelength of the optical element. It has a laser induced damage threshold which is at least 30 Jcm-2 measured using a pulsed laser at a wavelength of 10.6 µm with a pulse duration of 100 ns and a pulse repetition frequency in a range 1 to 10 Hz and/or is at least 1 MW/cm2 measured using a continuous wave laser at a wavelength of 10.6 µm. The surface pattern may be formed by an inductively coupled plasma (ICP) etching process which minimises nitrogen-vacancy (NV) defects in single crystal chemical vapour deposition (CVD) diamond materials. |
申请公布号 |
GB2513963(A) |
申请公布日期 |
2014.11.12 |
申请号 |
GB20140003804 |
申请日期 |
2014.03.04 |
申请人 |
ELEMENT SIX N.V.;ELEMENT SIX TECHNOLOGIES LIMITED |
发明人 |
DANIEL JAMES TWITCHEN;ANDREW MICHAEL BENNETT;YEVGENY VASILIEVICH ANOIKIN;HENDRIKUS GERARDUS MARIA DE WIT |
分类号 |
G02B1/11 |
主分类号 |
G02B1/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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