From: lucilemarechal95@gmail.com   
      
   Hello,   
      
   I am currently a PhD student at PROMES-CNRS and in the framework of my thesis   
   I am working on small solar concentrators, to concentrate light up to 10 000   
   times in an optical fibre. To carry out the planned experiments we would need   
   flashing illumination    
   with the whole solar spectrum (wavelength from 350nm to 2500nm). So, we’re   
   looking for a shutter capable of performing this task, ideally with shutter   
   opening times ranging from the ns to the ms timescale. The shutter could be   
   placed either on top of    
   the concentrator (option 1), either between the secondary mirror and the   
   optical fibre (option 2), please refer to the following figure. Please note   
   that in position 2 the shutter would be stressed, part of it would be exposed   
   to very high illumination    
   levels, which may raise additional mechanical issues.   
      
   The parabolic concentrator's diameter is approximatively 10 cm and the   
   distance between the optical fibre and the secondary mirror is approximatively   
   5 mm.   
      
      
   Do you have any ideas where I could find this kind of products?    
   Thank you in advance.    
      
   Sincerely,   
      
   Lucile Marechal   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)