CVD diamond: Microwave windows
CVD-Diamant Ankerrad

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Diamond microwave windows

  
Microwave beams generated by high-power gyrotron tubes are nowadays used to heat the plasma in magnetically confined fusion reactors. Power levels exceeding 1 MW cw have been demonstrated. A key component of these gyrotron tubes and of microwave transmission lines are diamond windows which are capable of handling these high power densities. 

Fraunhofer IAF and Diamond Materials have demonstrated the manufacturing of large area windows with very low dielectric losses. These windows have been successively used for high-power applications e.g. by FZK Karlsruhe and others.

 

 
 
Available options:  
Material "Dielectric grade", Loss tangens < 10-5, thermal conductivity > 1800 W/mK
Surfaces Both sides polished
Size 3" or 80 mm, larger sizes on request
Thickness 0.3 - 1.8 mm, perfect thickness uniformity
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