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   sci.optics      Discussion relating to the science of op      12,750 messages   

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   Message 11,981 of 12,750   
   ggherold@gmail.com to zhang...@gmail.com   
   Re: instead of frequency double in shg,    
   10 Nov 14 08:21:47   
   
   On Saturday, November 8, 2014 11:00:38 PM UTC-5, zhang...@gmail.com wrote:   
   > what kind of materials and what is the mechanism? any reading materials?   
   thanks a lot.   
      
   I think you want down conversion.  Here's the wiki article.   
   http://en.wikipedia.org/wiki/Spontaneous_parametric_down-conversion   
      
   George H.   
      
   --- SoupGate-Win32 v1.05   
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