From: hwabnig@.-   
      
   On Fri, 12 Jul 2013 05:34:31 -0700 (PDT), andriej.zet@gmail.com wrote:   
      
   >Hi,   
   >   
   >I try to filter out the laser beam through a spatial filter. I made a few   
   attempts. Every time I obtained a picture resembling Airy disk.   
   >I have question connected with the output picture from the filter.   
   >What picture should I get exactly at the output ?   
   >Airego disk or image resembling the clean gaussian beam (without external   
   satellites)?   
   >In my opinion satellites are always then when there is a diffraction.   
   >Because the input beam always (theoretically) extends to the infinity, at the   
   output I will have always diffraction pattern (with satelites).   
   >The satellites will have a different intensity, depending on the chosen   
   filter parameters.   
   >   
   >Is this correct reasoning?   
   >Thanks in advance,   
   >Andriej   
      
   Google for   
   "laser beam shaping"   
      
   w.   
      
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