From: pcdhSpamMeSenseless@electrooptical.net   
      
   On 12/8/2013 3:39 PM, laloum.eric@gmail.com wrote:   
   > Dear all,   
   >   
   > I'm looking for sensitive photon detector for near UV range in order to   
   detect cobtinuous nitrogen fluorescence emission between 300 and 400 nm  with   
   maximum around 340 nm.   
   > I know from literature that PMT could do the job, and notably in photon   
   counting mode ; but I would like to have more robust and maybe cheaper   
   alternative with solid-state detectors.   
   > I don't necessarily need fast time response since the source is not pulsed...   
   > Has anybody already tried Avalanche photodiode or Silicon Photomultiplier in   
   this specific UV range for low-light application ?   
      
   Fluorescence is usually pretty dim, so a PMT would be the usual choice.   
     Even visible-light PMTs have about six orders of magnitude lower dark   
   current than APDs per unit area, so they're very hard to beat unless you   
   can focus the light down into a very small area.   
      
   Cheers   
      
   Phil Hobbs   
      
   --   
   Dr Philip C D Hobbs   
   Principal Consultant   
   ElectroOptical Innovations LLC   
   Optics, Electro-optics, Photonics, Analog Electronics   
      
   160 North State Road #203   
   Briarcliff Manor NY 10510   
      
   hobbs at electrooptical dot net   
   http://electrooptical.net   
      
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