b6f5b45a   
   From: siegman@stanford.edu   
      
   In article <4D546DE1.9000702@electrooptical.net>,   
    Phil Hobbs  wrote:   
      
   > Tony-san,   
   >   
   > I re-read your and Dr. Tung In Cheek's paper--always a pleasure.  Due to   
   > the locality of Maxwell's equations, I'm pretty sure you're right that   
   > there's no way to get reflection gain from TIR off a gainy   
   > medium--mathematically, the light reflects off a boundary condition, and   
   > you'd need infinite energy density at the infinitesimally thin boundary   
   > in order to get gain that way.   
   >   
   > I'm not as clear on the argument for an exponentially growing wave on   
   > the gainy (low index) side.   
      
   Phil,   
      
   I'm going to have to finish up another task I'm doing at the moment, and   
   then write something up for the web, with equations and plots and graphs   
   (and maybe even twenty seven eight-by-ten colour glossy photographs with   
   circles and arrows and a paragraph on the back of each one explaining   
   what it means), rather than trying to answer here.   
      
   But, I've saved your comments, and thanks for the interest!   
      
      --AES   
      
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